1 dnl Autoconf script for GNU Emacs
2 dnl To rebuild the 'configure' script from this, execute the command
4 dnl in the directory containing this script.
5 dnl If you changed any AC_DEFINES, also run autoheader.
7 dnl Copyright (C) 1994-1996, 1999-2019 Free Software Foundation, Inc.
9 dnl This file is part of GNU Emacs.
11 dnl GNU Emacs is free software: you can redistribute it and/or modify
12 dnl it under the terms of the GNU General Public License as published by
13 dnl the Free Software Foundation, either version 3 of the License, or
14 dnl (at your option) any later version.
16 dnl GNU Emacs is distributed in the hope that it will be useful,
17 dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
18 dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 dnl GNU General Public License for more details.
21 dnl You should have received a copy of the GNU General Public License
22 dnl along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
25 dnl Note this is parsed by (at least) make-dist and lisp/cedet/ede/emacs.el.
26 AC_INIT(GNU Emacs, 27.0.50, bug-gnu-emacs@gnu.org, , https://www.gnu.org/software/emacs/)
28 dnl Set emacs_config_options to the options of 'configure', quoted for the shell,
29 dnl and then quoted again for a C string. Separate options with spaces.
30 dnl Add some environment variables, if they were passed via the environment
31 dnl rather than on the command-line.
34 dnl This is the documented way to record the args passed to configure,
35 dnl rather than $ac_configure_args.
36 for opt in "$@" CFLAGS CPPFLAGS LDFLAGS; do
38 -n | --no-create | --no-recursion)
40 CFLAGS | CPPFLAGS | LDFLAGS)
41 eval 'test "${'$opt'+set}" = set' || continue
43 *" $opt="*) continue ;;
45 eval opt=$opt=\$$opt ;;
48 emacs_shell_specials=$IFS\''"#$&()*;<>?@<:@\\`{|~'
50 *[["$emacs_shell_specials"]]*)
53 emacs_quote_apostrophes="s/'/'\\\\''/g"
54 opt=`AS_ECHO(["$opt"]) | sed "$emacs_quote_apostrophes"` ;;
59 emacs_quote_for_c='s/[["\\]]/\\&/g; $!s/$/\\n\\/'
60 opt=`AS_ECHO(["$opt"]) | sed "$emacs_quote_for_c"` ;;
63 AS_VAR_APPEND([emacs_config_options], ["$optsep$opt"])
67 AC_CONFIG_HEADERS(src/config.h:src/config.in)
68 AC_CONFIG_SRCDIR(src/lisp.h)
69 AC_CONFIG_AUX_DIR(build-aux)
70 AC_CONFIG_MACRO_DIR(m4)
73 AC_CHECK_PROGS(XCRUN, [xcrun])
74 if test -n "$XCRUN"; then
75 if test -z "$MAKE"; then
76 dnl Call the variable MAKE_PROG, not MAKE, to avoid confusion with
77 dnl the usual MAKE variable that 'make' itself uses.
78 AC_CHECK_PROG([MAKE_PROG], [make], [yes])
79 if test -z "$MAKE_PROG"; then
82 xcsdkdir=`$XCRUN --show-sdk-path 2>/dev/null`
87 dnl Check for GNU Make and possibly set MAKE.
88 [emacs_check_gnu_make ()
90 emacs_makeout=`($1 --version) 2>/dev/null` &&
91 case $emacs_makeout in
92 'GNU Make '3.8[1-9]* | 'GNU Make '3.9[0-9]* | \
93 'GNU Make '3.[1-9][0-9][0-9]* | 'GNU Make '[4-9]* | 'GNU Make '[1-9][0-9]* )
94 ac_path_MAKE_found=:;;
97 AC_CACHE_CHECK([for GNU Make], [ac_cv_path_MAKE],
98 [ac_path_MAKE_found=false
99 if test -n "$MAKE"; then
100 emacs_check_gnu_make "$MAKE"
101 ac_cv_path_MAKE=$MAKE
103 emacs_tried_make=false
104 emacs_tried_gmake=false
105 emacs_tried_gnumake=false
106 AC_PATH_PROGS_FEATURE_CHECK([MAKE], [make gmake gnumake],
107 [[emacs_check_gnu_make "$ac_path_MAKE"
108 if $ac_path_MAKE_found; then
109 # Use the fully-qualified program name only if the basename
110 # would not resolve to it.
111 if eval \$emacs_tried_$ac_prog; then
112 ac_cv_path_MAKE=$ac_path_MAKE
114 ac_cv_path_MAKE=$ac_prog
117 eval emacs_tried_$ac_prog=:]])
119 $ac_path_MAKE_found || {
120 AC_MSG_ERROR([[Building Emacs requires GNU Make, at least version 3.81.
121 If you have it installed under another name, configure with 'MAKE=...'.
122 For example, run '$0 MAKE=gnu-make'.]])
124 MAKE=$ac_cv_path_MAKE
127 dnl Canonicalize the configuration name.
133 if test -z "$host_alias"; then
135 # No --host argument was given to 'configure'; therefore $host
136 # was set to a default value based on the build platform. But
137 # this default value may be wrong if we are building from a
138 # 64-bit MSYS[2] pre-configured to build 32-bit MinGW programs.
139 # Therefore, we'll try to get the right host platform from the
142 AC_MSG_CHECKING([the compiler's target])
143 if test -z "$CC"; then
148 cc_target=`$cc -v 2>&1 | sed -n 's/Target: //p'`
152 "") AC_MSG_ERROR([Impossible to obtain $cc compiler target.
153 Please explicitly provide --host.])
155 *) AC_MSG_WARN([Compiler reported non-standard target.
156 Defaulting to $host.])
159 AC_MSG_RESULT([$host])
162 . $srcdir/nt/mingw-cfg.site
166 # srcdir is an absolute path. In this case, force the format
167 # "/c/foo/bar", to simplify later conversions to native Windows
168 # format ("c:/foo/bar").
169 srcdir=`cd "${srcdir}" && pwd -W`
170 # 'eval' pacifies strict POSIX non-MinGW shells (Bug#18612).
171 # We downcase the drive letter to avoid warnings when
172 # generating autoloads.
173 eval 'srcdir=/`echo ${srcdir:0:1} | sed "y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/"`"${srcdir:2}"'
179 configuration=${host_alias-${build_alias-$host}}
180 emacs_uname_r=`uname -r`
182 dnl Support for --program-prefix, --program-suffix and
183 dnl --program-transform-name options
186 dnl It is important that variables on the RHS not be expanded here,
187 dnl hence the single quotes. This is per the GNU coding standards, see
188 dnl (autoconf) Installation Directory Variables
189 dnl See also epaths.h below.
190 lispdir='${datadir}/emacs/${version}/lisp'
191 standardlisppath='${lispdir}'
192 locallisppath='${datadir}/emacs/${version}/site-lisp:'\
193 '${datadir}/emacs/site-lisp'
194 lisppath='${locallisppath}:${standardlisppath}'
195 etcdir='${datadir}/emacs/${version}/etc'
196 archlibdir='${libexecdir}/emacs/${version}/${configuration}'
197 etcdocdir='${datadir}/emacs/${version}/etc'
198 gamedir='${localstatedir}/games/emacs'
200 dnl Special option to disable the most of other options.
202 [AS_HELP_STRING([--without-all],
203 [omit almost all features and build
204 small executable with minimal dependencies])],
205 [with_features=$withval],
208 dnl OPTION_DEFAULT_OFF(NAME, HELP-STRING)
209 dnl Create a new --with option that defaults to being disabled.
210 dnl NAME is the base name of the option. The shell variable with_NAME
211 dnl will be set to either the user's value (if the option is
212 dnl specified; 'yes' for a plain --with-NAME) or to 'no' (if the
213 dnl option is not specified). Note that the shell variable name is
214 dnl constructed as autoconf does, by replacing non-alphanumeric
215 dnl characters with "_".
216 dnl HELP-STRING is the help text for the option.
217 AC_DEFUN([OPTION_DEFAULT_OFF], [dnl
218 AC_ARG_WITH([$1],[AS_HELP_STRING([--with-$1],[$2])],[],[dnl
219 m4_bpatsubst([with_$1], [[^0-9a-z]], [_])=no])dnl
222 dnl OPTION_DEFAULT_ON(NAME, HELP-STRING)
223 dnl Create a new --with option that defaults to $with_features.
224 dnl NAME is the base name of the option. The shell variable with_NAME
225 dnl will be set either to 'no' (for a plain --without-NAME) or to
226 dnl 'yes' (if the option is not specified). Note that the shell
227 dnl variable name is constructed as autoconf does, by replacing
228 dnl non-alphanumeric characters with "_".
229 dnl HELP-STRING is the help text for the option.
230 AC_DEFUN([OPTION_DEFAULT_ON], [dnl
231 AC_ARG_WITH([$1],[AS_HELP_STRING([--without-$1],[$2])],[],[dnl
232 m4_bpatsubst([with_$1], [[^0-9a-z]], [_])=$with_features])dnl
235 # For retrieving mail, unencrypted network connections are the default
236 # only on native MS-Windows platforms. (FIXME: These platforms should
237 # also be secure by default.)
239 AC_ARG_WITH([mailutils],
240 [AS_HELP_STRING([--with-mailutils],
241 [rely on GNU Mailutils, so that the --without-pop through --with-mailhost
242 options are irrelevant; this is the default if GNU Mailutils is
245 [with_mailutils=$with_features
246 if test "$with_mailutils" = yes; then
247 (movemail --version) >/dev/null 2>&1 || with_mailutils=no
249 if test "$with_mailutils" = no; then
252 AC_SUBST([with_mailutils])
255 [AS_HELP_STRING([--with-pop],
256 [Support POP mail retrieval if Emacs movemail is used (not recommended,
257 as Emacs movemail POP is insecure). This is the default only on
258 native MS-Windows.])],
261 *-mingw*) with_pop=yes;;
262 *) with_pop=no-by-default;;
264 if test "$with_pop" = yes; then
265 AC_DEFINE(MAIL_USE_POP)
267 AH_TEMPLATE(MAIL_USE_POP, [Define to support POP mail retrieval.])dnl
269 OPTION_DEFAULT_OFF([kerberos],[support Kerberos-authenticated POP])
270 if test "$with_kerberos" != no; then
273 AH_TEMPLATE(KERBEROS,
274 [Define to support Kerberos-authenticated POP mail retrieval.])dnl
276 OPTION_DEFAULT_OFF([kerberos5],[support Kerberos version 5 authenticated POP])
277 if test "${with_kerberos5}" != no; then
278 if test "${with_kerberos}" = no; then
282 AC_DEFINE(KERBEROS5, 1, [Define to use Kerberos 5 instead of Kerberos 4.])
285 OPTION_DEFAULT_OFF([hesiod],[support Hesiod to get the POP server host])
286 dnl FIXME hesiod support may not be present, so it seems like an error
287 dnl to define, or at least use, this unconditionally.
288 if test "$with_hesiod" != no; then
289 AC_DEFINE(HESIOD, 1, [Define to support using a Hesiod database to find the POP server.])
292 OPTION_DEFAULT_OFF([mail-unlink],[unlink, rather than empty, mail spool after reading])
293 if test "$with_mail_unlink" != no; then
294 AC_DEFINE(MAIL_UNLINK_SPOOL, 1, [Define to unlink, rather than empty, mail spool after reading.])
297 AC_ARG_WITH([mailhost],[AS_HELP_STRING([--with-mailhost=HOSTNAME],
298 [string giving default POP mail host])],
299 AC_DEFINE_UNQUOTED(MAILHOST, ["$withval"], [String giving fallback POP mail host.]))
301 AC_ARG_WITH([sound],[AS_HELP_STRING([--with-sound=VALUE],
302 [compile with sound support (VALUE one of: yes, alsa, oss, bsd-ossaudio, no;
303 default yes). Only for GNU/Linux, FreeBSD, NetBSD, MinGW, Cygwin.])],
304 [ case "${withval}" in
305 yes|no|alsa|oss|bsd-ossaudio) val=$withval ;;
306 *) AC_MSG_ERROR(['--with-sound=$withval' is invalid;
307 this option's value should be 'yes', 'no', 'alsa', 'oss', or 'bsd-ossaudio'.])
312 [with_sound=$with_features])
314 AC_ARG_WITH([pdumper],
316 [--with-pdumper=VALUE],
317 [enable pdumper support unconditionally
318 ('yes', 'no', or 'auto': default 'auto')]),
319 [ case "${withval}" in
320 yes|no|auto) val=$withval ;;
322 ['--with-pdumper=$withval' is invalid;
323 this option's value should be 'yes' or 'no'.]) ;;
329 AC_ARG_WITH([unexec],
331 [--with-unexec=VALUE],
332 [enable unexec support unconditionally
333 ('yes', 'no', or 'auto': default 'auto')]),
334 [ case "${withval}" in
335 yes|no|auto) val=$withval ;;
337 ['--with-unexec=$withval' is invalid;
338 this option's value should be 'yes' or 'no'.]) ;;
344 AC_ARG_WITH([dumping],[AS_HELP_STRING([--with-dumping=VALUE],
345 [kind of dumping to use for initial Emacs build
346 (VALUE one of: pdumper, unexec, none; default pdumper)])],
347 [ case "${withval}" in
348 pdumper|unexec|none) val=$withval ;;
349 *) AC_MSG_ERROR(['--with-dumping=$withval is invalid;
350 this option's value should be 'pdumper', 'unexec', or 'none'.])
355 [with_dumping=pdumper])
357 if test "$with_pdumper" = "auto"; then
358 if test "$with_dumping" = "pdumper"; then
365 if test "$with_unexec" = "auto"; then
366 if test "$with_dumping" = "unexec"; then
373 if test "$with_dumping" = "pdumper" && test "$with_pdumper" = "no"; then
374 AC_MSG_ERROR(['--with-dumping=pdumper' requires pdumper support])
377 if test "$with_dumping" = "unexec" && test "$with_unexec" = "no"; then
378 AC_MSG_ERROR(['--with-dumping=unexec' requires unexec support])
381 if test "$with_pdumper" = "yes"; then
382 AC_DEFINE([HAVE_PDUMPER], 1, [Define to build with portable dumper support])
387 AC_SUBST([HAVE_PDUMPER])
389 DUMPING=$with_dumping
392 dnl FIXME currently it is not the last.
393 dnl This should be the last --with option, because --with-x is
394 dnl added later on when we find the file name of X, and it's best to
395 dnl keep them together visually.
396 AC_ARG_WITH([x-toolkit],[AS_HELP_STRING([--with-x-toolkit=KIT],
397 [use an X toolkit (KIT one of: yes or gtk, gtk2, gtk3, lucid or athena, motif, no)])],
398 [ case "${withval}" in
399 y | ye | yes ) val=gtk ;;
401 l | lu | luc | luci | lucid ) val=lucid ;;
402 a | at | ath | athe | athen | athena ) val=athena ;;
403 m | mo | mot | moti | motif ) val=motif ;;
404 g | gt | gtk ) val=gtk ;;
408 AC_MSG_ERROR(['--with-x-toolkit=$withval' is invalid;
409 this option's value should be 'yes', 'no', 'lucid', 'athena', 'motif', 'gtk',
410 'gtk2' or 'gtk3'. 'yes' and 'gtk' are synonyms.
411 'athena' and 'lucid' are synonyms.])
417 OPTION_DEFAULT_OFF([wide-int], [prefer wide Emacs integers (typically 62-bit); allows buffer and string size up to 2GB on 32-bit hosts, at the cost of 10% to 30% slowdown of Lisp interpreter and larger memory footprint])
418 if test "$with_wide_int" = yes; then
419 AC_DEFINE([WIDE_EMACS_INT], 1, [Use long long for EMACS_INT if available.])
422 dnl _ON results in a '--without' option in the --help output, so
423 dnl the help text should refer to "don't compile", etc.
424 with_xpm_set=${with_xpm+set}
425 OPTION_DEFAULT_ON([xpm],[don't compile with XPM image support])
426 OPTION_DEFAULT_ON([jpeg],[don't compile with JPEG image support])
427 OPTION_DEFAULT_ON([tiff],[don't compile with TIFF image support])
428 OPTION_DEFAULT_ON([gif],[don't compile with GIF image support])
429 OPTION_DEFAULT_ON([png],[don't compile with PNG image support])
430 OPTION_DEFAULT_ON([rsvg],[don't compile with SVG image support])
431 OPTION_DEFAULT_ON([lcms2],[don't compile with Little CMS support])
432 OPTION_DEFAULT_ON([libsystemd],[don't compile with libsystemd support])
433 OPTION_DEFAULT_OFF([cairo],[compile with Cairo drawing])
434 OPTION_DEFAULT_ON([xml2],[don't compile with XML parsing support])
435 OPTION_DEFAULT_OFF([imagemagick],[compile with ImageMagick image support])
436 OPTION_DEFAULT_ON([json], [don't compile with native JSON support])
438 OPTION_DEFAULT_ON([xft],[don't use XFT for anti aliased fonts])
439 OPTION_DEFAULT_ON([harfbuzz],[don't use HarfBuzz for text shaping])
440 OPTION_DEFAULT_ON([libotf],[don't use libotf for OpenType font support])
441 OPTION_DEFAULT_ON([m17n-flt],[don't use m17n-flt for text shaping])
443 OPTION_DEFAULT_ON([toolkit-scroll-bars],[don't use Motif/Xaw3d/GTK toolkit scroll bars])
444 OPTION_DEFAULT_ON([xaw3d],[don't use Xaw3d])
445 OPTION_DEFAULT_ON([xim],[at runtime, default X11 XIM to off])
446 AC_ARG_WITH([ns],[AS_HELP_STRING([--with-ns],
447 [use Nextstep (macOS Cocoa or GNUstep) windowing system.
448 On by default on macOS.])],[],[with_ns=maybe])
449 OPTION_DEFAULT_OFF([w32], [use native MS Windows GUI in a Cygwin build])
451 OPTION_DEFAULT_ON([gpm],[don't use -lgpm for mouse support on a GNU/Linux console])
452 OPTION_DEFAULT_ON([dbus],[don't compile with D-Bus support])
453 AC_ARG_WITH([gconf],[AS_HELP_STRING([--with-gconf],
454 [compile with Gconf support (Gsettings replaces this)])],[],
455 [if test $with_features = yes; then
460 OPTION_DEFAULT_ON([gsettings],[don't compile with GSettings support])
461 OPTION_DEFAULT_ON([selinux],[don't compile with SELinux support])
462 OPTION_DEFAULT_ON([gnutls],[don't use -lgnutls for SSL/TLS support])
463 OPTION_DEFAULT_ON([zlib],[don't compile with zlib decompression support])
464 OPTION_DEFAULT_OFF([modules],[compile with dynamic modules support])
465 OPTION_DEFAULT_ON([threads],[don't compile with elisp threading support])
467 AC_ARG_WITH([file-notification],[AS_HELP_STRING([--with-file-notification=LIB],
468 [use a file notification library (LIB one of: yes, inotify, kqueue, gfile, w32, no)])],
469 [ case "${withval}" in
470 y | ye | yes ) val=yes ;;
472 i | in | ino | inot | inoti | inotif | inotify ) val=inotify ;;
473 k | kq | kqu | kque | kqueu | kqueue ) val=kqueue ;;
474 g | gf | gfi | gfil | gfile ) val=gfile ;;
475 w | w3 | w32 ) val=w32 ;;
476 * ) AC_MSG_ERROR(['--with-file-notification=$withval' is invalid;
477 this option's value should be 'yes', 'no', 'inotify', 'kqueue', 'gfile' or 'w32'.
478 'yes' is a synonym for 'w32' on MS-Windows, for 'no' on Nextstep,
479 otherwise for the first of 'inotify', 'kqueue' or 'gfile' that is usable.])
482 with_file_notification=$val
484 [with_file_notification=$with_features])
486 OPTION_DEFAULT_OFF([xwidgets],
487 [enable use of some gtk widgets in Emacs buffers (requires gtk3)])
489 ## For the times when you want to build Emacs but don't have
490 ## a suitable makeinfo, and can live without the manuals.
491 dnl https://lists.gnu.org/r/emacs-devel/2008-04/msg01844.html
492 OPTION_DEFAULT_ON([makeinfo],[don't require makeinfo for building manuals])
494 ## Makefile.in needs the cache file name.
497 ## This is an option because I do not know if all info/man support
498 ## compressed files, nor how to test if they do so.
499 OPTION_DEFAULT_ON([compress-install],
500 [don't compress some files (.el, .info, etc.) when installing. Equivalent to:
501 make GZIP_PROG= install])
503 AC_ARG_WITH(gameuser,dnl
504 [AS_HELP_STRING([--with-gameuser=USER_OR_GROUP],
505 [user for shared game score files.
506 An argument prefixed by ':' specifies a group instead.])])
509 case ${with_gameuser} in
511 yes) gamegroup=games ;;
512 :*) gamegroup=${with_gameuser#:} ;;
513 *) gameuser=${with_gameuser} ;;
516 AC_ARG_WITH([gnustep-conf],dnl
517 [AS_HELP_STRING([--with-gnustep-conf=FILENAME],
518 [name of GNUstep configuration file to use on systems where the command
519 'gnustep-config' does not work; default $GNUSTEP_CONFIG_FILE, or
520 /etc/GNUstep/GNUstep.conf])])
521 test "X${with_gnustep_conf}" != X && test "${with_gnustep_conf}" != yes && \
522 GNUSTEP_CONFIG_FILE="${with_gnustep_conf}"
523 test "X$GNUSTEP_CONFIG_FILE" = "X" && \
524 GNUSTEP_CONFIG_FILE=/etc/GNUstep/GNUstep.conf
526 AC_ARG_ENABLE(ns-self-contained,
527 [AS_HELP_STRING([--disable-ns-self-contained],
528 [disable self contained build under NeXTstep])],
529 EN_NS_SELF_CONTAINED=$enableval,
530 EN_NS_SELF_CONTAINED=yes)
533 AC_ARG_ENABLE(locallisppath,
534 [AS_HELP_STRING([--enable-locallisppath=PATH],
535 [directories Emacs should search for lisp files specific
537 if test "${enableval}" = "no"; then
539 elif test "${enableval}" != "yes"; then
540 locallisppath=${enableval} locallisppathset=yes
543 AC_ARG_ENABLE(checking,
544 [AS_HELP_STRING([--enable-checking@<:@=LIST@:>@],
545 [enable expensive checks. With LIST,
546 enable only specific categories of checks.
547 Categories are: all,yes,no.
548 Flags are: stringbytes, stringoverrun, stringfreelist,
550 [ac_checking_flags="${enableval}"],[])
551 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
553 for check in $ac_checking_flags
556 # these set all the flags to specific states
557 yes) ac_enable_checking=1 ;;
558 no) ac_enable_checking= ;
560 ac_gc_check_stringbytes= ;
561 ac_gc_check_string_overrun= ;
562 ac_gc_check_string_free_list= ;
564 all) ac_enable_checking=1 ;
566 ac_gc_check_stringbytes=1 ;
567 ac_gc_check_string_overrun=1 ;
568 ac_gc_check_string_free_list=1 ;
570 # these enable particular checks
571 stringbytes) ac_gc_check_stringbytes=1 ;;
572 stringoverrun) ac_gc_check_string_overrun=1 ;;
573 stringfreelist) ac_gc_check_string_free_list=1 ;;
574 structs) CHECK_STRUCTS=true ;;
575 glyphs) ac_glyphs_debug=1 ;;
576 *) AC_MSG_ERROR(unknown check category $check) ;;
581 if test x$ac_enable_checking != x ; then
582 AC_DEFINE(ENABLE_CHECKING, 1,
583 [Define to 1 if expensive run-time data type and consistency checks are enabled.])
585 if $CHECK_STRUCTS; then
586 AC_DEFINE([CHECK_STRUCTS], 1,
587 [Define this to check whether someone updated the portable dumper
588 code after changing the layout of a structure that it uses.
589 If you change one of these structures, check that the pdumper.c
590 code is still valid, and update the pertinent hash in pdumper.c
591 by manually copying the hash from the newly-generated dmpstruct.h.])
593 AC_SUBST([CHECK_STRUCTS])
594 if test x$ac_gc_check_stringbytes != x ; then
595 AC_DEFINE(GC_CHECK_STRING_BYTES, 1,
596 [Define this temporarily to hunt a bug. If defined, the size of
597 strings is redundantly recorded in sdata structures so that it can
598 be compared to the sizes recorded in Lisp strings.])
600 if test x$ac_gc_check_string_overrun != x ; then
601 AC_DEFINE(GC_CHECK_STRING_OVERRUN, 1,
602 [Define this to check for short string overrun.])
604 if test x$ac_gc_check_string_free_list != x ; then
605 AC_DEFINE(GC_CHECK_STRING_FREE_LIST, 1,
606 [Define this to check the string free list.])
608 if test x$ac_glyphs_debug != x ; then
609 AC_DEFINE(GLYPH_DEBUG, 1,
610 [Define this to enable glyphs debugging code.])
613 dnl The name of this option is unfortunate. It predates, and has no
614 dnl relation to, the "sampling-based elisp profiler" added in 24.3.
615 dnl Actually, it stops it working.
616 dnl https://lists.gnu.org/r/emacs-devel/2012-11/msg00393.html
617 AC_ARG_ENABLE(profiling,
618 [AS_HELP_STRING([--enable-profiling],
619 [build emacs with low-level, gprof profiling support.
620 Mainly useful for debugging Emacs itself. May not work on
621 all platforms. Stops profiler.el working.])],
622 [ac_enable_profiling="${enableval}"],[])
623 if test x$ac_enable_profiling != x ; then
624 PROFILING_CFLAGS="-DPROFILING=1 -pg"
628 AC_SUBST(PROFILING_CFLAGS)
630 AC_ARG_ENABLE(autodepend,
631 [AS_HELP_STRING([--enable-autodepend],
632 [automatically generate dependencies to .h-files.
633 Requires gcc, enabled if found.])],
634 [ac_enable_autodepend="${enableval}"],[ac_enable_autodepend=yes])
636 AC_ARG_ENABLE(gtk-deprecation-warnings,
637 [AS_HELP_STRING([--enable-gtk-deprecation-warnings],
638 [Show Gtk+/Gdk deprecation warnings for Gtk+ >= 3.0])],
639 [ac_enable_gtk_deprecation_warnings="${enableval}"],[])
642 AC_ARG_ENABLE([build-details],
643 [AS_HELP_STRING([--disable-build-details],
644 [Make the build more deterministic by omitting host
645 names, time stamps, etc. from the output.])],
646 [test "$enableval" = no && BUILD_DETAILS=--no-build-details])
647 AC_SUBST([BUILD_DETAILS])
649 dnl This used to use changequote, but, apart from 'changequote is evil'
650 dnl per the autoconf manual, we can speed up autoconf somewhat by quoting
651 dnl the great gob of text. Thus it's not processed for possible expansion.
652 dnl Just make sure the brackets remain balanced.
654 dnl Since Emacs can't find matching pairs of quotes, boundaries are
655 dnl indicated by comments.
659 ### If you add support for a new configuration, add code to this
660 ### switch statement to recognize your configuration name and select
661 ### the appropriate opsys.
663 ### As far as handling version numbers on operating systems is
664 ### concerned, make sure things will fail in a fixable way. If
665 ### /etc/MACHINES doesn't say anything about version numbers, be
666 ### prepared to handle anything reasonably. If version numbers
667 ### matter, be sure /etc/MACHINES says something about it.
670 case "${canonical}" in
672 ## GNU/Linux and similar ports
687 ## FreeBSD kernel + glibc based userland
698 *-*-openbsd* | *-*-mirbsd* )
702 ## Apple Darwin / macOS
704 case "${canonical}" in
705 *-apple-darwin[0-9].*) unported=yes ;;
706 i[3456]86-* | x86_64-* ) ;;
710 ## FIXME: Find a way to use Fink if available (Bug#11507).
713 ## Chromium Native Client
723 ## HP 9000 series 700 and 800, running HP/UX
727 hppa*-hp-hpux1[1-9]* )
729 CFLAGS="-D_INCLUDE__STDC_A1_SOURCE $CFLAGS"
733 rs6000-ibm-aix4.[23]* )
736 powerpc-ibm-aix4.[23]* )
739 rs6000-ibm-aix[56]* )
742 powerpc-ibm-aix[5-9]* | powerpc-ibm-aix[1-9][0-9]* )
748 | i[3456]86-*-solaris2* | i[3456]86-*-sunos5* \
749 | x86_64-*-solaris2* | x86_64-*-sunos5*)
750 case "${canonical}" in
752 amd64-*-*|x86_64-*-*) ;;
756 case "${canonical}" in
757 *-sunos5.[1-9][0-9]* | *-solaris2.[1-9][0-9]* )
759 emacs_check_sunpro_c=yes
761 *-sunos5.[1-5]* | *-solaris2.[1-5]* ) unported=yes ;;
762 ## Note that Emacs 23.1's NEWS said the following would be dropped.
763 *-sunos5.6* | *-solaris2.6* )
767 ## 5.7 EOL Aug 2008, 5.8 EOL Mar 2012.
768 *-sunos5.[7-9]* | *-solaris2.[7-9]* )
770 emacs_check_sunpro_c=yes
773 ## Watch out for a compiler that we know will not work.
774 case "${canonical}" in
775 *-solaris* | *-sunos5* )
776 if [ "x$CC" = x/usr/ucb/cc ]; then
777 ## /usr/ucb/cc doesn't work;
778 ## we should find some other compiler that does work.
789 test -z "$CC" && CC=qcc
790 CFLAGS="$CFLAGS -D__NO_EXT_QNX"
791 if test "$with_unexec" = yes; then
792 LDFLAGS="-N2MB $LDFLAGS"
796 ## Intel 386 machines where we don't care about the manufacturer.
798 case "${canonical}" in
799 *-darwin* ) opsys=darwin ;;
802 # MinGW overrides and adds some system headers in nt/inc.
803 GCC_TEST_OPTIONS="-I $srcdir/nt/inc"
805 *-sysv4.2uw* ) opsys=unixware ;;
806 *-sysv5uw* ) opsys=unixware ;;
807 *-sysv5OpenUNIX* ) opsys=unixware ;;
808 ## Otherwise, we'll fall through to the generic opsys code at the bottom.
814 case "${canonical}" in
817 # MinGW overrides and adds some system headers in nt/inc.
818 GCC_TEST_OPTIONS="-I $srcdir/nt/inc"
820 ## Otherwise, we'll fall through to the generic opsys code at the bottom.
829 ### If the code above didn't choose an operating system, just choose
830 ### an operating system based on the configuration name. You really
831 ### only want to use this when you have no idea what the right
832 ### operating system is; if you know what operating systems a machine
833 ### runs, it's cleaner to make it explicit in the case statement
835 if test x"${opsys}" = x; then
836 case "${canonical}" in
837 *-gnu* ) opsys=gnu ;;
847 if test $unported = yes; then
848 AC_MSG_ERROR([Emacs does not support '${canonical}' systems.
849 If you think it should, please send a report to ${PACKAGE_BUGREPORT}.
850 Check 'etc/MACHINES' for recognized configuration names.])
853 #### Choose a compiler.
855 dnl Don't bother to test for C89.
856 AC_DEFUN([_AC_PROG_CC_C89], [$2])
858 dnl Sets GCC=yes if using gcc.
859 AC_PROG_CC([gcc cc cl clang "$XCRUN gcc" "$XCRUN clang"])
860 if test -n "$XCRUN"; then
861 AC_CHECK_PROGS(AR, [ar "$XCRUN ar"])
862 test -n "$AR" && export AR
865 dnl Emacs needs C99 or later.
870 if test x$GCC = xyes; then
871 test "x$GCC_TEST_OPTIONS" != x && CC="$CC $GCC_TEST_OPTIONS"
874 # Avoid gnulib's tests for -lcrypto, so that there's no static dependency on it.
875 AC_DEFUN([gl_CRYPTO_CHECK])
876 # Avoid gnulib's tests for HAVE_WORKING_O_NOATIME and HAVE_WORKING_O_NOFOLLOW,
877 # as we don't use them.
878 AC_DEFUN([gl_FCNTL_O_FLAGS])
879 # Avoid gnulib's test for pthread_sigmask.
881 for func in $ac_func_list; do
882 test $func = pthread_sigmask || AS_VAR_APPEND([funcs], [" $func"])
885 # Use the system putenv even if it lacks GNU features, as we don't need them,
886 # and the gnulib replacement runs afoul of a FreeBSD 10.1 bug; see Bug#19874.
887 AC_CHECK_FUNCS_ONCE([putenv])
888 AC_DEFUN([gl_FUNC_PUTENV],
889 [test "$ac_cv_func_putenv" = yes || REPLACE_PUTENV=1])
890 # Emacs does not use the wchar or wctype-h modules.
891 AC_DEFUN([gt_TYPE_WINT_T],
892 [GNULIB_OVERRIDES_WINT_T=0
893 AC_SUBST([GNULIB_OVERRIDES_WINT_T])])
895 # Initialize gnulib right after choosing the compiler.
896 dnl Amongst other things, this sets AR and ARFLAGS.
899 if test "$ac_test_CFLAGS" != set; then
900 # It's helpful to have C macros available to GDB, so prefer -g3 to -g
901 # if -g3 works and the user does not specify CFLAGS.
902 # This test must follow gl_EARLY; otherwise AC_LINK_IFELSE complains.
905 emacs_g3_CFLAGS='-g3';;
907 emacs_g3_CFLAGS='-g3 -O2';;
911 if test -n "$emacs_g3_CFLAGS"; then
912 emacs_save_CFLAGS=$CFLAGS
913 CFLAGS=$emacs_g3_CFLAGS
914 AC_CACHE_CHECK([whether $CC accepts $emacs_g3_CFLAGS],
915 [emacs_cv_prog_cc_g3],
916 [AC_LINK_IFELSE([AC_LANG_PROGRAM()],
917 [emacs_cv_prog_cc_g3=yes],
918 [emacs_cv_prog_cc_g3=no])])
919 if test $emacs_cv_prog_cc_g3 != yes; then
920 CFLAGS=$emacs_save_CFLAGS
922 if test $opsys = mingw32; then
923 CFLAGS="$CFLAGS -gdwarf-2"
930 # No optimization flag was inferred for this non-GCC compiler.
931 # Try -O. This is needed for xlc on AIX; see Bug#14258.
932 emacs_save_CFLAGS=$CFLAGS
933 test -z "$CFLAGS" || CFLAGS="$CFLAGS "
935 AC_CACHE_CHECK([whether $CC accepts -O],
936 [emacs_cv_prog_cc_o],
937 [AC_LINK_IFELSE([AC_LANG_PROGRAM()],
938 [emacs_cv_prog_cc_o=yes],
939 [emacs_cv_prog_cc_o=no])])
940 if test $emacs_cv_prog_cc_o != yes; then
941 CFLAGS=$emacs_save_CFLAGS
946 # gl_GCC_VERSION_IFELSE([major], [minor], [run-if-found], [run-if-not-found])
947 # ---------------------------------------------------------------------------
948 # If $CPP is gcc-MAJOR.MINOR or newer, then run RUN-IF-FOUND.
949 # Otherwise, run RUN-IF-NOT-FOUND.
950 AC_DEFUN([gl_GCC_VERSION_IFELSE],
954 #if ($1) < __GNUC__ || (($1) == __GNUC__ && ($2) <= __GNUC_MINOR__)
957 # error "your version of gcc is older than $1.$2"
964 AC_ARG_ENABLE([gcc-warnings],
965 [AS_HELP_STRING([--enable-gcc-warnings@<:@=TYPE@:>@],
966 [control generation of GCC warnings. The TYPE 'yes'
967 means to fail if any warnings are issued; 'warn-only'
968 means issue warnings without failing (default for
969 developer builds); 'no' means disable warnings
970 (default for non-developer builds).])],
973 *) AC_MSG_ERROR([bad value $enableval for gcc-warnings option]) ;;
975 gl_gcc_warnings=$enableval],
976 [# By default, use 'warn-only' if it looks like the invoker of 'configure'
977 # is a developer as opposed to a builder. This is most likely true
978 # if GCC is recent enough and there is a .git directory or file;
979 # however, if there is also a .tarball-version file it is probably
980 # just a release imported into Git for patch management.
982 if test -e "$srcdir"/.git && test ! -f "$srcdir"/.tarball-version; then
983 gl_GCC_VERSION_IFELSE([5], [3], [gl_gcc_warnings=warn-only])
986 AC_ARG_ENABLE([check-lisp-object-type],
987 [AS_HELP_STRING([--enable-check-lisp-object-type],
988 [Enable compile time checks for the Lisp_Object data type,
989 which can catch some bugs during development.])])
990 if test "$enable_check_lisp_object_type" = yes; then
991 AC_DEFINE([CHECK_LISP_OBJECT_TYPE], 1,
992 [Define to enable compile-time checks for the Lisp_Object data type.])
995 # clang is unduly picky about some things.
996 AC_CACHE_CHECK([whether the compiler is clang], [emacs_cv_clang],
1003 [emacs_cv_clang=yes],
1004 [emacs_cv_clang=no])])
1007 # When compiling with GCC, prefer -isystem to -I when including system
1008 # include files, to avoid generating useless diagnostics for the files.
1009 AS_IF([test $gl_gcc_warnings = no],
1012 AS_IF([test "$emacs_cv_clang" = yes],
1014 # Turn off some warnings if supported.
1015 gl_WARN_ADD([-Wno-switch])
1016 gl_WARN_ADD([-Wno-pointer-sign])
1017 gl_WARN_ADD([-Wno-string-plus-int])
1018 gl_WARN_ADD([-Wno-unknown-attributes])
1023 # This, $nw, is the list of warnings we disable.
1026 case $with_x_toolkit in
1027 lucid | athena | motif)
1028 # Old toolkits mishandle 'const'.
1029 nw="$nw -Wwrite-strings"
1032 AS_IF([test $gl_gcc_warnings = yes],
1033 [WERROR_CFLAGS=-Werror])
1035 nw="$nw -Wcast-align -Wcast-align=strict" # Emacs is tricky with pointers.
1036 nw="$nw -Wduplicated-branches" # Too many false alarms
1037 nw="$nw -Wformat-overflow=2" # False alarms due to GCC bug 80776
1038 nw="$nw -Wsystem-headers" # Don't let system headers trigger warnings
1039 nw="$nw -Woverlength-strings" # Not a problem these days
1040 nw="$nw -Wformat-nonliteral" # we do this a lot
1041 nw="$nw -Wvla" # Emacs uses <vla.h>.
1042 nw="$nw -Wunused-const-variable=2" # lisp.h declares const objects.
1043 nw="$nw -Winline" # OK to ignore 'inline'
1044 nw="$nw -Wstrict-overflow" # OK to optimize assuming that
1045 # signed overflow has undefined behavior
1046 nw="$nw -Wsync-nand" # irrelevant here, and provokes ObjC warning
1047 nw="$nw -Wunsafe-loop-optimizations" # OK to suppress unsafe optimizations
1048 nw="$nw -Wbad-function-cast" # These casts are no worse than others.
1049 nw="$nw -Wabi" # Not useful, perceived as noise
1051 # Emacs doesn't care about shadowing; see
1052 # <https://lists.gnu.org/r/emacs-diffs/2011-11/msg00265.html>.
1055 # Emacs's use of alloca inhibits protecting the stack.
1056 nw="$nw -Wstack-protector"
1058 # Emacs's use of __attribute__ ((cold)) causes false alarms with this option.
1059 nw="$nw -Wsuggest-attribute=cold"
1061 # Emacs's use of partly-const functions such as Fgnutls_available_p
1062 # make this option problematic.
1063 nw="$nw -Wsuggest-attribute=const"
1065 # Emacs's use of partly-pure functions such as CHECK_TYPE make this
1066 # option problematic.
1067 nw="$nw -Wsuggest-attribute=pure"
1069 # This part is merely for shortening the command line,
1070 # since -Wall implies -Wswitch.
1073 # This part is merely for shortening the command line,
1074 # since -Wno-FOO needs to be added below regardless.
1075 nw="$nw -Wmissing-field-initializers"
1076 nw="$nw -Woverride-init"
1077 nw="$nw -Wtype-limits"
1078 nw="$nw -Wunused-parameter"
1080 if test "$emacs_cv_clang" = yes; then
1081 nw="$nw -Wcast-align"
1082 nw="$nw -Wdouble-promotion"
1083 nw="$nw -Wmissing-braces"
1086 # These cause too much noise in the MinGW build
1087 if test $opsys = mingw32; then
1088 nw="$nw -Wpointer-sign"
1089 nw="$nw -Wsuggest-attribute=format"
1092 gl_MANYWARN_ALL_GCC([ws])
1093 gl_MANYWARN_COMPLEMENT([ws], [$ws], [$nw])
1097 gl_WARN_ADD([-Wredundant-decls]) # Prefer this, as we don't use Bison.
1098 gl_WARN_ADD([-Wno-missing-field-initializers]) # We need this one
1099 gl_WARN_ADD([-Wno-override-init]) # More trouble than it is worth
1100 gl_WARN_ADD([-Wno-sign-compare]) # Too many warnings for now
1101 gl_WARN_ADD([-Wno-type-limits]) # Too many warnings for now
1102 gl_WARN_ADD([-Wno-unused-parameter]) # Too many warnings for now
1103 gl_WARN_ADD([-Wno-format-nonliteral])
1105 # clang is unduly picky about some things.
1106 if test "$emacs_cv_clang" = yes; then
1107 gl_WARN_ADD([-Wno-missing-braces])
1108 gl_WARN_ADD([-Wno-null-pointer-arithmetic])
1111 # This causes too much noise in the MinGW build
1112 if test $opsys = mingw32; then
1113 gl_WARN_ADD([-Wno-pointer-sign])
1116 AC_DEFINE([GCC_LINT], [1], [Define to 1 if --enable-gcc-warnings.])
1117 AC_DEFINE([GNULIB_PORTCHECK], [1], [enable some gnulib portability checks])
1118 AH_VERBATIM([GNULIB_PORTCHECK_FORTIFY_SOURCE],
1119 [/* Enable compile-time and run-time bounds-checking, and some warnings,
1120 without upsetting glibc 2.15+. */
1121 #if (defined GNULIB_PORTCHECK && !defined _FORTIFY_SOURCE \
1122 && defined __OPTIMIZE__ && __OPTIMIZE__)
1123 # define _FORTIFY_SOURCE 2
1128 # clang is picky about these regardless of whether
1129 # --enable-gcc-warnings is specified.
1130 if test "$emacs_cv_clang" = yes; then
1131 gl_WARN_ADD([-Wno-initializer-overrides])
1132 gl_WARN_ADD([-Wno-tautological-compare])
1133 gl_WARN_ADD([-Wno-tautological-constant-out-of-range-compare])
1136 # Use a slightly smaller set of warning options for lib/.
1138 nw="$nw -Wunused-macros"
1139 gl_MANYWARN_COMPLEMENT([GNULIB_WARN_CFLAGS], [$WARN_CFLAGS], [$nw])
1141 AC_SUBST([WERROR_CFLAGS])
1142 AC_SUBST([GNULIB_WARN_CFLAGS])
1151 AC_ARG_ENABLE(link-time-optimization,
1152 [AS_HELP_STRING([--enable-link-time-optimization],
1153 [build with link-time optimization
1154 (experimental; see INSTALL)])],
1155 if test "${enableval}" != "no"; then
1157 if test "$emacs_cv_clang" = yes; then
1158 AC_MSG_CHECKING([whether link-time optimization is supported by clang])
1159 GOLD_PLUGIN=`$CC -print-file-name=LLVMgold.so 2>/dev/null`
1160 if test -x "$GOLD_PLUGIN"; then
1163 elif test x$GCC = xyes; then
1164 AC_MSG_CHECKING([whether link-time optimization is supported by gcc])
1165 CPUS=`getconf _NPROCESSORS_ONLN 2>/dev/null`
1166 if test x$CPUS != x; then
1172 AC_MSG_ERROR([Link-time optimization is not supported with your compiler.])
1174 if test -z "$LTO"; then
1178 CFLAGS="$CFLAGS $LTO"
1179 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
1180 [ac_lto_supported=yes], [ac_lto_supported=no])
1181 CFLAGS="$old_CFLAGS"
1183 AC_MSG_RESULT([$ac_lto_supported])
1184 if test "$ac_lto_supported" = "yes"; then
1185 CFLAGS="$CFLAGS $LTO"
1186 if test "$emacs_cv_clang" = yes; then
1187 AC_MSG_WARN([Please read INSTALL before using link-time optimization with clang])
1188 # WARNING: 'ar --plugin ...' doesn't work without
1189 # command, so plugin name is appended to ARFLAGS.
1190 ARFLAGS="cru --plugin $GOLD_PLUGIN"
1191 RANLIB="$RANLIB --plugin $GOLD_PLUGIN"
1193 dnl The following is needed for GCC 4.9.0. The GCC 4.9.0 release notes
1194 dnl suggest that instead of -ffat-lto-objects we should use gcc-ar and
1195 dnl gcc-ranlib in place of ar and ranlib, but gcc-ar makes /usr/bin/ar
1196 dnl dump core on Fedora 20, so play it safe for now.
1197 gl_COMPILER_OPTION_IF([-ffat-lto-objects],
1198 [CFLAGS="$CFLAGS -ffat-lto-objects"])
1204 dnl Automake replacements.
1205 AC_DEFUN([AM_CONDITIONAL],
1209 dnl Prefer silent make output. For verbose output, use
1210 dnl 'configure --disable-silent-rules' or 'make V=1' .
1211 dnl This code is adapted from Automake.
1212 dnl Although it can be simplified now that GNU Make is assumed,
1213 dnl the simplification hasn't been done yet.
1214 AC_ARG_ENABLE([silent-rules],
1216 [--disable-silent-rules],
1217 [verbose build output (undo: "make V=0")])])
1218 if test "$enable_silent_rules" = no; then
1219 AM_DEFAULT_VERBOSITY=1
1221 AM_DEFAULT_VERBOSITY=0
1224 AM_DEFAULT_V='$(AM_DEFAULT_VERBOSITY)'
1226 AC_SUBST([AM_DEFAULT_V])
1227 AC_SUBST([AM_DEFAULT_VERBOSITY])
1229 dnl Some other nice autoconf tests.
1231 dnl These are commented out, since gl_EARLY and/or Autoconf already does them.
1233 dnl if test "x$RANLIB" = x; then
1238 dnl Sadly, AC_PROG_LN_S is too restrictive. It also tests whether links
1239 dnl can be made to directories. This is not relevant for our usage, and
1240 dnl excludes some cases that work fine for us. Eg MS Windows or files
1241 dnl hosted on AFS, both examples where simple links work, but links to
1242 dnl directories fail. We use a cut-down version instead.
1245 AC_CACHE_CHECK([command to symlink files in the same directory], [emacs_cv_ln_s_fileonly],
1246 [rm -f conf$$ conf$$.file
1248 emacs_cv_ln_s_fileonly='cp -p'
1250 dnl On MinGW, ensure we will call the MSYS /bin/ln.exe, not some
1251 dnl random program in the current directory.
1252 if (echo >conf$$.file) 2>/dev/null; then
1253 if ln -s conf$$.file conf$$ 2>/dev/null; then
1254 if test "$opsys" = "mingw32"; then
1255 emacs_cv_ln_s_fileonly='/bin/ln -s'
1257 emacs_cv_ln_s_fileonly='ln -s'
1259 elif ln conf$$.file conf$$ 2>/dev/null; then
1260 if test "$opsys" = "mingw32"; then
1261 emacs_cv_ln_s_fileonly=/bin/ln
1263 emacs_cv_ln_s_fileonly=ln
1268 rm -f conf$$ conf$$.file])
1269 LN_S_FILEONLY=$emacs_cv_ln_s_fileonly
1271 AC_SUBST(LN_S_FILEONLY)
1274 dnl AC_PROG_LN_S sets LN_S to 'cp -pR' for MinGW, on the premise that 'ln'
1275 dnl doesn't support links to directories, as in "ln file dir". But that
1276 dnl use is non-portable, and OTOH MinGW wants to use hard links for Emacs
1277 dnl executables at "make install" time.
1278 dnl See https://lists.gnu.org/r/emacs-devel/2013-04/msg00475.html
1279 dnl for more details.
1280 if test "$opsys" = "mingw32"; then
1284 dnl On some Debian versions, "install-info" prints irritating messages
1285 dnl "This is not dpkg install-info anymore, but GNU install-info"
1286 dnl if called via an absolute file name.
1287 dnl Use the entirely-identical-but-quieter ginstall-info instead if present.
1288 dnl Sadly some people may have an old ginstall-info installed on
1289 dnl non-Debian systems, so we can't use this.
1290 dnl AC_PATH_PROGS(INSTALL_INFO, [ginstall-info install-info], :,
1291 dnl $PATH$PATH_SEPARATOR/usr/sbin$PATH_SEPARATOR/sbin)
1293 AC_PATH_PROG(INSTALL_INFO, install-info, :,
1294 $PATH$PATH_SEPARATOR/usr/sbin$PATH_SEPARATOR/sbin)
1295 dnl Don't use GZIP, which is used by gzip for additional parameters.
1296 AC_PATH_PROG(GZIP_PROG, gzip)
1298 test $with_compress_install != yes && test -n "$GZIP_PROG" && \
1299 GZIP_PROG=" # $GZIP_PROG # (disabled by configure --without-compress-install)"
1301 if test "$with_dumping" = "unexec" && test "$opsys" = "nacl"; then
1302 AC_MSG_ERROR([nacl is not compatible with --with-dumping=unexec])
1305 AC_CACHE_CHECK([for 'find' args to delete a file],
1306 [emacs_cv_find_delete],
1307 [if touch conftest.tmp && find conftest.tmp -delete 2>/dev/null &&
1308 test ! -f conftest.tmp
1309 then emacs_cv_find_delete="-delete"
1310 else emacs_cv_find_delete="-exec rm -f {} ';'"
1312 FIND_DELETE=$emacs_cv_find_delete
1313 AC_SUBST([FIND_DELETE])
1317 if test $with_unexec = yes && test $opsys = gnu-linux; then
1318 if test "${SETFATTR+set}" != set; then
1319 AC_CACHE_CHECK([for setfattr],
1320 [emacs_cv_prog_setfattr],
1322 if (setfattr -n user.pax.flags conftest.tmp) >/dev/null 2>&1; then
1323 emacs_cv_prog_setfattr=yes
1325 emacs_cv_prog_setfattr=no
1327 if test "$emacs_cv_prog_setfattr" = yes; then
1328 PAXCTL_notdumped='$(SETFATTR) -n user.pax.flags -v er'
1334 case $opsys,$PAXCTL_notdumped,$emacs_uname_r in
1335 gnu-linux,,* | netbsd,,[0-7].*)
1336 AC_PATH_PROG([PAXCTL], [paxctl], [],
1337 [$PATH$PATH_SEPARATOR/sbin$PATH_SEPARATOR/usr/sbin])
1338 if test -n "$PAXCTL"; then
1339 if test "$opsys" = netbsd; then
1340 PAXCTL_dumped='$(PAXCTL) +a'
1341 PAXCTL_notdumped=$PAXCTL_dumped
1343 AC_MSG_CHECKING([whether binaries have a PT_PAX_FLAGS header])
1344 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
1345 [if $PAXCTL -v conftest$EXEEXT >/dev/null 2>&1; then
1346 AC_MSG_RESULT([yes])
1351 if test -n "$PAXCTL"; then
1352 PAXCTL_dumped='$(PAXCTL) -zex'
1353 PAXCTL_notdumped='$(PAXCTL) -r'
1359 AC_SUBST([PAXCTL_dumped])
1360 AC_SUBST([PAXCTL_notdumped])
1361 AC_SUBST([SETFATTR])
1363 # Makeinfo on macOS is ancient, check whether there is a more recent
1364 # version installed by Homebrew.
1365 AC_CHECK_PROGS(BREW, [brew])
1366 if test -n "$BREW"; then
1367 AC_PATH_PROG([MAKEINFO], [makeinfo], [],
1368 [`$BREW --prefix texinfo 2>/dev/null`/bin$PATH_SEPARATOR$PATH])
1371 ## Require makeinfo >= 4.13 (last of the 4.x series) to build the manuals.
1372 if test "${MAKEINFO:=makeinfo}" != "no"; then
1373 case `($MAKEINFO --version) 2>/dev/null` in
1374 *' (GNU texinfo) '4.1[[3-9]]* | \
1375 *' (GNU texinfo) '[[5-9]]* | \
1376 *' (GNU texinfo) '[[1-9][0-9]]* ) ;;
1381 ## Makeinfo is unusual. For a released Emacs, the manuals are
1382 ## pre-built, and not deleted by the normal clean rules. makeinfo is
1383 ## therefore in the category of "special tools" not normally required, which
1384 ## configure does not have to check for (eg autoconf itself).
1385 ## In a repository checkout on the other hand, the manuals are not included.
1386 ## So makeinfo is a requirement to build from the repository, and configure
1387 ## should test for it as it does for any other build requirement.
1388 ## We use the presence of $srcdir/info/emacs to distinguish a release,
1389 ## with pre-built manuals, from a repository checkout.
1392 if test "$MAKEINFO" = "no"; then
1394 if test "x${with_makeinfo}" = "xno"; then
1396 elif test ! -e "$srcdir/info/emacs" && test ! -e "$srcdir/info/emacs.info"; then
1397 AC_MSG_ERROR( [You do not seem to have makeinfo >= 4.13, and your
1398 source tree does not seem to have pre-built manuals in the 'info' directory.
1399 Either install a suitable version of makeinfo, or re-run configure
1400 with the '--without-makeinfo' option to build without the manuals.] )
1403 AC_SUBST([MAKEINFO])
1404 AC_SUBST(HAVE_MAKEINFO)
1406 if test $opsys = mingw32; then
1407 DOCMISC_W32=efaq-w32
1411 AC_SUBST(DOCMISC_W32)
1413 dnl Add our options to ac_link now, after it is set up.
1415 if test x$GCC = xyes; then
1416 test "x$GCC_LINK_TEST_OPTIONS" != x && \
1417 ac_link="$ac_link $GCC_LINK_TEST_OPTIONS"
1419 test "x$NON_GCC_LINK_TEST_OPTIONS" != x && \
1420 ac_link="$ac_link $NON_GCC_LINK_TEST_OPTIONS"
1423 dnl On some platforms using GNU ld, linking temacs needs -znocombreloc.
1424 dnl Although this has something to do with dumping, the details are unknown.
1425 dnl If the flag is used but not needed,
1426 dnl Emacs should still work (albeit a bit more slowly),
1427 dnl so use the flag everywhere that it is supported.
1428 dnl When testing whether the flag works, treat GCC specially
1429 dnl since it just gives a non-fatal 'unrecognized option'
1430 dnl if not built to support GNU ld.
1431 if test "$GCC" = yes; then
1432 LDFLAGS_NOCOMBRELOC="-Wl,-znocombreloc"
1434 LDFLAGS_NOCOMBRELOC="-znocombreloc"
1437 AC_CACHE_CHECK([for -znocombreloc], [emacs_cv_znocombreloc],
1438 [if test $with_unexec = no; then
1439 emacs_cv_znocombreloc='not needed'
1441 save_LDFLAGS=$LDFLAGS
1442 LDFLAGS="$LDFLAGS $LDFLAGS_NOCOMBRELOC"
1443 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
1444 [emacs_cv_znocombreloc=yes], [emacs_cv_znocombreloc=no])
1445 LDFLAGS=$save_LDFLAGS
1448 case $emacs_cv_znocombreloc in
1450 LDFLAGS_NOCOMBRELOC= ;;
1454 AC_CACHE_CHECK([whether addresses are sanitized],
1455 [emacs_cv_sanitize_address],
1458 [[#ifndef __has_feature
1459 #define __has_feature(f) 0
1461 #if defined __SANITIZE_ADDRESS__ || __has_feature (address_sanitizer)
1463 error "Addresses are not sanitized.";
1466 [emacs_cv_sanitize_address=yes],
1467 [emacs_cv_sanitize_address=no])])
1469 if test $with_unexec = yes; then
1470 AC_DEFINE([HAVE_UNEXEC], 1, [Define if Emacs supports unexec.])
1471 if test "$emacs_cv_sanitize_address" = yes; then
1472 AC_MSG_WARN([[Addresses are sanitized; suggest --without-unexec]])
1478 test $with_unexec = yes &&
1480 # MSDOS uses unexcoff.o
1482 UNEXEC_OBJ=unexaix.o
1488 UNEXEC_OBJ=unexmacosx.o
1491 UNEXEC_OBJ=unexhp9k800.o
1494 UNEXEC_OBJ=unexw32.o
1497 # Use the Solaris dldump() function, called from unexsol.c, to dump
1498 # emacs, instead of the generic ELF dump code found in unexelf.c.
1499 # The resulting binary has a complete symbol table, and is better
1500 # for debugging and other observability tools (debuggers, pstack, etc).
1502 # It is likely that dldump() works with older Solaris too, but this has
1503 # not been tested, so for now this change is for Solaris 10 or newer.
1504 UNEXEC_OBJ=unexsol.o
1507 UNEXEC_OBJ=unexelf.o
1512 test "$with_unexec" = no || case "$opsys" in
1514 ## Let 'ld' find image libs and similar things in /usr/local/lib.
1515 ## The system compiler, GCC, has apparently been modified to not
1516 ## look there, contrary to what a stock GCC would do.
1517 ### It's not our place to do this. See bug#10313#17.
1518 ### LD_SWITCH_SYSTEM=-L/usr/local/lib
1523 ## cpp test was "ifdef __mips__", but presumably this is equivalent...
1524 case $host_cpu in mips*) LD_SWITCH_SYSTEM="-G 0";; esac
1528 ### It's not our place to do this. See bug#10313#17.
1529 ### LD_SWITCH_SYSTEM="-Wl,-rpath,/usr/pkg/lib -L/usr/pkg/lib -Wl,-rpath,/usr/local/lib -L/usr/local/lib"
1534 ## Han Boetes <han@boetes.org> says this is necessary,
1535 ## otherwise Emacs dumps core on elf systems.
1536 LD_SWITCH_SYSTEM="-Z"
1539 AC_SUBST(LD_SWITCH_SYSTEM)
1541 ac_link="$ac_link $LD_SWITCH_SYSTEM"
1543 ## This setting of LD_SWITCH_SYSTEM references LD_SWITCH_X_SITE_RPATH,
1544 ## which has not been defined yet. When this was handled with cpp,
1545 ## it was expanded to null when configure sourced the s/*.h file.
1546 ## Thus LD_SWITCH_SYSTEM had different values in configure and the Makefiles.
1547 ## FIXME it would be cleaner to put this in LD_SWITCH_SYSTEM_TEMACS
1548 ## (or somesuch), but because it is supposed to go at the _front_
1549 ## of LD_SWITCH_SYSTEM, we cannot do that in exactly the same way.
1550 ## Compare with the gnu-linux case below, which added to the end
1551 ## of LD_SWITCH_SYSTEM, and so can instead go at the front of
1552 ## LD_SWITCH_SYSTEM_TEMACS.
1555 LD_SWITCH_SYSTEM="\$(LD_SWITCH_X_SITE_RPATH) $LD_SWITCH_SYSTEM" ;;
1560 test $with_unexec = yes &&
1563 AC_CHECK_DECL([__ELF__])
1564 if test "$ac_cv_have_decl___ELF__" = "yes"; then
1565 ## With ELF, make sure that all common symbols get allocated to in the
1566 ## data section. Otherwise, the dump of temacs may miss variables in
1567 ## the shared library that have been initialized. For example, with
1568 ## GNU libc, __malloc_initialized would normally be resolved to the
1569 ## shared library's .bss section, which is fatal.
1570 if test "x$GCC" = "xyes"; then
1571 C_SWITCH_MACHINE="-fno-common"
1573 AC_MSG_ERROR([Non-GCC compilers are not supported.])
1576 dnl This was the unexalpha.c case. Removed in 24.1, 2010-07-24,
1577 dnl albeit under the mistaken assumption that said file
1578 dnl was no longer used.
1579 AC_MSG_ERROR([Non-ELF systems are not supported since Emacs 24.1.])
1583 AC_SUBST(C_SWITCH_MACHINE)
1585 AC_SUBST(UNEXEC_OBJ)
1588 ## Some programs in src produce warnings saying certain subprograms
1589 ## are too complex and need a MAXMEM value greater than 2000 for
1590 ## additional optimization. --nils@exp-math.uni-essen.de
1591 test "$opsys" = "aix4.2" && test "x$GCC" != "xyes" && \
1592 C_SWITCH_SYSTEM="-ma -qmaxmem=4000"
1593 if test "$opsys" = "mingw32"; then
1594 case "$canonical" in
1595 x86_64-*-mingw*) C_SWITCH_SYSTEM="-mtune=generic" ;;
1596 *) C_SWITCH_SYSTEM="-mtune=pentium4" ;;
1599 ## gnu-linux might need -D_BSD_SOURCE on old libc5 systems.
1600 ## It is redundant in glibc2, since we define _GNU_SOURCE.
1601 AC_SUBST(C_SWITCH_SYSTEM)
1606 ## IBM's X11R5 uses -lIM and -liconv in AIX 3.2.2.
1607 aix4-2) LIBS_SYSTEM="-lrts -lIM -liconv" ;;
1609 freebsd|dragonfly) LIBS_SYSTEM="-lutil" ;;
1611 hpux*) LIBS_SYSTEM="-l:libdld.sl" ;;
1613 qnxnto) LIBS_SYSTEM="-lsocket" ;;
1615 sol2*) LIBS_SYSTEM="-lsocket -lnsl" ;;
1617 ## Motif needs -lgen.
1618 unixware) LIBS_SYSTEM="-lsocket -lnsl -lelf -lgen" ;;
1621 AC_SUBST(LIBS_SYSTEM)
1623 ### Make sure subsequent tests use flags consistent with the build flags.
1625 if test x"${OVERRIDE_CPPFLAGS}" != x; then
1626 CPPFLAGS="${OVERRIDE_CPPFLAGS}"
1628 CPPFLAGS="$C_SWITCH_SYSTEM $C_SWITCH_MACHINE $CPPFLAGS"
1631 # Suppress obsolescent Autoconf test for size_t; Emacs assumes C99 or better.
1632 AC_DEFUN([AC_TYPE_SIZE_T])
1633 # Likewise for obsolescent test for uid_t, gid_t; Emacs assumes them.
1634 AC_DEFUN([AC_TYPE_UID_T])
1636 # sqrt and other floating-point functions such as fmod and frexp
1637 # are found in -lm on many systems.
1639 AC_SEARCH_LIBS([sqrt], [m])
1640 if test "X$LIBS" = "X$OLD_LIBS"; then
1643 LIB_MATH=$ac_cv_search_sqrt
1647 dnl Current possibilities handled by sed (aix4-2 -> aix,
1648 dnl gnu-linux -> gnu/linux, etc.):
1649 dnl gnu, gnu/linux, gnu/kfreebsd, aix, cygwin, darwin, hpux.
1650 dnl And special cases: berkeley-unix, usg-unix-v, ms-dos, windows-nt.
1651 SYSTEM_TYPE=`echo $opsys | sed -e 's/[[0-9]].*//' -e 's|-|/|'`
1658 ## Adding -lm confuses the dynamic linker, so omit it.
1661 freebsd | dragonfly )
1662 SYSTEM_TYPE=berkeley-unix
1664 gnu-linux | gnu-kfreebsd )
1666 hpux10-20 | hpux11 )
1670 SYSTEM_TYPE=windows-nt
1673 SYSTEM_TYPE=berkeley-unix
1677 SYSTEM_TYPE=usg-unix-v
1683 AC_DEFINE_UNQUOTED(SYSTEM_TYPE, "$SYSTEM_TYPE",
1684 [The type of system you are compiling for; sets 'system-type'.])
1685 AC_SUBST([SYSTEM_TYPE])
1688 pre_PKG_CONFIG_CFLAGS=$CFLAGS
1689 pre_PKG_CONFIG_LIBS=$LIBS
1691 PKG_PROG_PKG_CONFIG(0.9.0)
1693 dnl EMACS_CHECK_MODULES(GSTUFF, gtk+-2.0 >= 1.3 glib = 1.3.4)
1694 dnl acts like PKG_CHECK_MODULES(GSTUFF, gtk+-2.0 >= 1.3 glib = 1.3.4,
1695 dnl HAVE_GSTUFF=yes, HAVE_GSTUFF=no) -- see pkg-config man page --
1696 dnl except that it postprocesses CFLAGS as needed for --enable-gcc-warnings.
1697 dnl EMACS_CHECK_MODULES accepts optional 3rd and 4th arguments that
1698 dnl can take the place of the default HAVE_GSTUFF=yes and HAVE_GSTUFF=no
1700 AC_DEFUN([EMACS_CHECK_MODULES],
1701 [PKG_CHECK_MODULES([$1], [$2],
1702 [$1_CFLAGS=`AS_ECHO(["$$1_CFLAGS"]) | sed -e "$edit_cflags"`
1703 m4_default([$3], [HAVE_$1=yes])],
1704 [m4_default([$4], [HAVE_$1=no])])])
1707 if test "${with_sound}" != "no"; then
1708 # Sound support for GNU/Linux, the free BSDs, MinGW, and Cygwin.
1709 AC_CHECK_HEADERS([machine/soundcard.h sys/soundcard.h soundcard.h mmsystem.h],
1710 have_sound_header=yes, [], [
1712 #define WIN32_LEAN_AND_MEAN
1713 #include <windows.h>
1716 test "${with_sound}" = "oss" && test "${have_sound_header}" != "yes" && \
1717 AC_MSG_ERROR([OSS sound support requested but not found.])
1719 if test "${with_sound}" = "bsd-ossaudio" || test "${with_sound}" = "yes"; then
1720 # Emulation library used on NetBSD.
1721 AC_CHECK_LIB(ossaudio, _oss_ioctl, LIBSOUND=-lossaudio, LIBSOUND=)
1722 test "${with_sound}" = "bsd-ossaudio" && test -z "$LIBSOUND" && \
1723 AC_MSG_ERROR([bsd-ossaudio sound support requested but not found.])
1724 dnl FIXME? If we did find ossaudio, should we set with_sound=bsd-ossaudio?
1725 dnl Traditionally, we go on to check for alsa too. Does that make sense?
1729 if test "${with_sound}" = "alsa" || test "${with_sound}" = "yes"; then
1731 ALSA_MODULES="alsa >= $ALSA_REQUIRED"
1732 EMACS_CHECK_MODULES([ALSA], [$ALSA_MODULES])
1733 if test $HAVE_ALSA = yes; then
1734 SAVE_CFLAGS="$CFLAGS"
1736 CFLAGS="$ALSA_CFLAGS $CFLAGS"
1737 LIBS="$ALSA_LIBS $LIBS"
1738 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <asoundlib.h>]], [[snd_lib_error_set_handler (0);]])],
1739 emacs_alsa_normal=yes,
1740 emacs_alsa_normal=no)
1741 if test "$emacs_alsa_normal" != yes; then
1742 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <alsa/asoundlib.h>]],
1743 [[snd_lib_error_set_handler (0);]])],
1744 emacs_alsa_subdir=yes,
1745 emacs_alsa_subdir=no)
1746 if test "$emacs_alsa_subdir" != yes; then
1747 AC_MSG_ERROR([pkg-config found alsa, but it does not compile. See config.log for error messages.])
1749 ALSA_CFLAGS="$ALSA_CFLAGS -DALSA_SUBDIR_INCLUDE"
1752 CFLAGS="$SAVE_CFLAGS"
1754 LIBSOUND="$LIBSOUND $ALSA_LIBS"
1755 CFLAGS_SOUND="$CFLAGS_SOUND $ALSA_CFLAGS"
1756 AC_DEFINE(HAVE_ALSA, 1, [Define to 1 if ALSA is available.])
1757 elif test "${with_sound}" = "alsa"; then
1758 AC_MSG_ERROR([ALSA sound support requested but not found.])
1760 fi dnl with_sound = alsa|yes
1762 dnl Define HAVE_SOUND if we have sound support. We know it works and
1763 dnl compiles only on the specified platforms. For others, it
1764 dnl probably doesn't make sense to try.
1765 dnl FIXME So surely we should bypass this whole section if not using
1766 dnl one of these platforms?
1767 if test x$have_sound_header = xyes || test $HAVE_ALSA = yes; then
1769 dnl defined __FreeBSD__ || defined __NetBSD__ || defined __linux__
1770 dnl Adjust the --with-sound help text if you change this.
1771 gnu-linux|freebsd|netbsd|mingw32|cygwin)
1772 AC_DEFINE(HAVE_SOUND, 1, [Define to 1 if you have sound support.])
1778 AC_SUBST(CFLAGS_SOUND)
1781 dnl checks for header files
1782 AC_CHECK_HEADERS_ONCE(
1789 sys/utsname.h pwd.h utmp.h util.h sys/prctl.h)
1791 AC_CACHE_CHECK([for ADDR_NO_RANDOMIZE],
1792 [emacs_cv_personality_addr_no_randomize],
1794 [AC_LANG_PROGRAM([[#include <sys/personality.h>]],
1795 [[personality (personality (0xffffffff)
1796 | ADDR_NO_RANDOMIZE)]])],
1797 [emacs_cv_personality_addr_no_randomize=yes],
1798 [emacs_cv_personality_addr_no_randomize=no])])
1799 if test $emacs_cv_personality_addr_no_randomize = yes; then
1800 AC_DEFINE([HAVE_PERSONALITY_ADDR_NO_RANDOMIZE], [1],
1801 [Define to 1 if personality flag ADDR_NO_RANDOMIZE exists.])
1804 # Note that Solaris has sys/sysinfo.h which defines struct
1805 # sysinfo as well. To make sure that we're using GNU/Linux
1806 # sysinfo, we explicitly set one of its fields.
1807 if test "$ac_cv_header_sys_sysinfo_h" = yes; then
1808 AC_CACHE_CHECK([if Linux sysinfo may be used], [emacs_cv_linux_sysinfo],
1809 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/sysinfo.h>]],
1810 [[struct sysinfo si;
1813 emacs_cv_linux_sysinfo=yes, emacs_cv_linux_sysinfo=no)])
1815 if test $emacs_cv_linux_sysinfo = yes; then
1816 AC_DEFINE([HAVE_LINUX_SYSINFO], 1, [Define to 1 if you have Linux sysinfo function.])
1817 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/sysinfo.h>]],
1818 [[struct sysinfo si; return si.mem_unit]])],
1819 AC_DEFINE(LINUX_SYSINFO_UNIT, 1,
1820 [Define to 1 if Linux sysinfo sizes are in multiples of mem_unit bytes.]))
1824 dnl On Solaris 8 there's a compilation warning for term.h because
1825 dnl it doesn't define 'bool'.
1826 AC_CHECK_HEADERS(term.h, , , -)
1828 AC_CHECK_DECLS([sys_siglist], [], [], [[#include <signal.h>
1830 if test $ac_cv_have_decl_sys_siglist != yes; then
1831 # For Tru64, at least:
1832 AC_CHECK_DECLS([__sys_siglist], [], [], [[#include <signal.h>
1837 AC_CHECK_HEADERS_ONCE(sys/socket.h)
1838 AC_CHECK_HEADERS(net/if.h, , , [AC_INCLUDES_DEFAULT
1839 #if HAVE_SYS_SOCKET_H
1840 #include <sys/socket.h>
1842 AC_CHECK_HEADERS(ifaddrs.h, , , [AC_INCLUDES_DEFAULT
1843 #if HAVE_SYS_SOCKET_H
1844 #include <sys/socket.h>
1846 AC_CHECK_HEADERS(net/if_dl.h, , , [AC_INCLUDES_DEFAULT
1847 #if HAVE_SYS_SOCKET_H
1848 #include <sys/socket.h>
1851 dnl checks for structure members
1852 AC_CHECK_MEMBERS([struct ifreq.ifr_flags, struct ifreq.ifr_hwaddr,
1853 struct ifreq.ifr_netmask, struct ifreq.ifr_broadaddr,
1854 struct ifreq.ifr_addr,
1855 struct ifreq.ifr_addr.sa_len], , ,
1856 [AC_INCLUDES_DEFAULT
1857 #if HAVE_SYS_SOCKET_H
1858 #include <sys/socket.h>
1864 dnl Check for endianness.
1865 dnl AC_C_BIGENDIAN is done by gnulib.
1867 dnl check for Make feature
1870 AUTODEPEND_PARENTS='lib src'
1871 dnl check if we have GCC and autodepend is on.
1872 if test "$GCC" = yes && test "$ac_enable_autodepend" = yes; then
1873 AC_CACHE_CHECK([whether gcc understands -MMD -MF], [emacs_cv_autodepend],
1874 [SAVE_CFLAGS="$CFLAGS"
1875 CFLAGS="$CFLAGS -MMD -MF deps.d -MP"
1876 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
1877 [emacs_cv_autodepend=yes], [emacs_cv_autodepend=no])
1878 CFLAGS="$SAVE_CFLAGS"
1879 test -f deps.d || emacs_cv_autodepend=no
1881 if test $emacs_cv_autodepend = yes; then
1885 AC_SUBST(AUTO_DEPEND)
1887 #### Choose a window system.
1889 ## We leave window_system equal to none if
1890 ## we end up building without one. Any new window system should
1891 ## set window_system to an appropriate value and add objects to
1892 ## window-system-specific substs.
1896 if test "$no_x" != yes; then
1900 LD_SWITCH_X_SITE_RPATH=
1901 if test "${x_libraries}" != NONE; then
1902 if test -n "${x_libraries}"; then
1903 LD_SWITCH_X_SITE=-L`AS_ECHO(["$x_libraries"]) | sed -e 's/:/ -L/g'`
1904 LD_SWITCH_X_SITE_RPATH=-Wl,-rpath,`
1905 AS_ECHO(["$x_libraries"]) | sed -e 's/:/ -Wl,-rpath,/g'
1908 x_default_search_path=""
1909 x_search_path=${x_libraries}
1910 if test -z "${x_search_path}"; then
1911 x_search_path=/usr/lib
1913 for x_library in `AS_ECHO(["$x_search_path:"]) | \
1914 sed -e "s/:/ /g" -e p -e "s:/lib[[^ /]]* :/share :g"`; do
1916 ${x_library}/X11/%L/%T/%N%C%S:\
1917 ${x_library}/X11/%l/%T/%N%C%S:\
1918 ${x_library}/X11/%T/%N%C%S:\
1919 ${x_library}/X11/%L/%T/%N%S:\
1920 ${x_library}/X11/%l/%T/%N%S:\
1921 ${x_library}/X11/%T/%N%S"
1922 if test x"${x_default_search_path}" = x; then
1923 x_default_search_path=${x_search_path}
1925 x_default_search_path="${x_search_path}:${x_default_search_path}"
1929 AC_SUBST(LD_SWITCH_X_SITE_RPATH)
1931 if test "${x_includes}" != NONE && test -n "${x_includes}"; then
1932 C_SWITCH_X_SITE=$isystem`AS_ECHO(["$x_includes"]) | sed -e "s/:/ $isystem/g"`
1935 if test x"${x_includes}" = x; then
1936 bitmapdir=/usr/include/X11/bitmaps
1938 # accumulate include directories that have X11 bitmap subdirectories
1940 for bmd in `AS_ECHO(["$x_includes"]) | sed -e 's/:/ /g'`; do
1941 if test -d "${bmd}/X11/bitmaps"; then
1942 bmd_acc="${bmd_acc}:${bmd}/X11/bitmaps"
1944 if test -d "${bmd}/bitmaps"; then
1945 bmd_acc="${bmd_acc}:${bmd}/bitmaps"
1948 bitmapdir=${bmd_acc#:}
1951 test "${with_ns}" = maybe && test "${opsys}" != darwin && with_ns=no
1953 NS_GNUSTEP_CONFIG=no
1956 tmp_CPPFLAGS="$CPPFLAGS"
1957 tmp_CFLAGS="$CFLAGS"
1958 CPPFLAGS="$CPPFLAGS -x objective-c"
1959 CFLAGS="$CFLAGS -x objective-c"
1962 if test "${with_ns}" != no; then
1963 # macfont.o requires macuvs.h which is absent after 'make extraclean',
1964 # so avoid NS_IMPL_COCOA if macuvs.h is absent.
1965 # Even a headless Emacs can build macuvs.h, so this should let you bootstrap.
1966 if test "${opsys}" = darwin && test -f "$srcdir/src/macuvs.h"; then
1968 ns_appdir=`pwd`/nextstep/Emacs.app
1969 ns_appbindir=${ns_appdir}/Contents/MacOS
1970 ns_appresdir=${ns_appdir}/Contents/Resources
1971 ns_appsrc=Cocoa/Emacs.base
1972 ns_fontfile=macfont.o
1973 elif flags=$( (gnustep-config --objc-flags) 2>/dev/null); then
1975 NS_GNUSTEP_CONFIG=yes
1976 GNU_OBJC_CFLAGS=$flags
1977 LIBS_GNUSTEP=$(gnustep-config --gui-libs) || exit
1978 elif test -f $GNUSTEP_CONFIG_FILE; then
1980 dnl FIXME sourcing this several times in subshells seems inefficient.
1981 GNUSTEP_SYSTEM_HEADERS=$(
1982 . $GNUSTEP_CONFIG_FILE
1983 AS_ECHO(["$GNUSTEP_SYSTEM_HEADERS"])
1985 GNUSTEP_SYSTEM_LIBRARIES=$(
1986 . $GNUSTEP_CONFIG_FILE
1987 AS_ECHO(["$GNUSTEP_SYSTEM_LIBRARIES"])
1989 dnl I seemed to need these as well with GNUstep-startup 0.25.
1990 GNUSTEP_LOCAL_HEADERS=$(
1991 . $GNUSTEP_CONFIG_FILE
1992 AS_ECHO(["$GNUSTEP_LOCAL_HEADERS"])
1994 GNUSTEP_LOCAL_LIBRARIES=$(
1995 . $GNUSTEP_CONFIG_FILE
1996 AS_ECHO(["$GNUSTEP_LOCAL_LIBRARIES"])
1998 test "x${GNUSTEP_LOCAL_HEADERS}" != "x" && \
1999 GNUSTEP_LOCAL_HEADERS="-I${GNUSTEP_LOCAL_HEADERS}"
2000 test "x${GNUSTEP_LOCAL_LIBRARIES}" != "x" && \
2001 GNUSTEP_LOCAL_LIBRARIES="-L${GNUSTEP_LOCAL_LIBRARIES}"
2002 CPPFLAGS="$CPPFLAGS -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
2003 CFLAGS="$CFLAGS -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
2004 LDFLAGS="$LDFLAGS -L${GNUSTEP_SYSTEM_LIBRARIES} ${GNUSTEP_LOCAL_LIBRARIES}"
2005 LIBS_GNUSTEP="-lgnustep-gui -lgnustep-base -lobjc -lpthread"
2006 dnl GNUstep defines BASE_NATIVE_OBJC_EXCEPTIONS to 0 or 1.
2007 dnl If they had chosen to either define it or not, we could have
2008 dnl just used AC_CHECK_DECL here.
2009 AC_CACHE_CHECK(if GNUstep defines BASE_NATIVE_OBJC_EXCEPTIONS,
2010 emacs_cv_objc_exceptions,
2011 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <GNUstepBase/GSConfig.h>]],
2012 [[#if defined BASE_NATIVE_OBJC_EXCEPTIONS && BASE_NATIVE_OBJC_EXCEPTIONS > 0
2016 #endif]])], emacs_cv_objc_exceptions=yes, emacs_cv_objc_exceptions=no ) )
2017 if test $emacs_cv_objc_exceptions = yes; then
2018 dnl _NATIVE_OBJC_EXCEPTIONS is used by the GNUstep headers.
2019 AC_DEFINE(_NATIVE_OBJC_EXCEPTIONS, 1,
2020 [Define if GNUstep uses ObjC exceptions.])
2021 GNU_OBJC_CFLAGS="-fobjc-exceptions"
2024 if test $NS_IMPL_GNUSTEP = yes; then
2025 ns_appdir=`pwd`/nextstep/Emacs.app
2026 ns_appbindir=${ns_appdir}
2027 ns_appresdir=${ns_appdir}/Resources
2028 ns_appsrc=GNUstep/Emacs.base
2029 ns_fontfile=nsfont.o
2032 dnl This is only used while we test the NS headers, it gets reset below.
2033 CPPFLAGS="$CPPFLAGS $GNU_OBJC_CFLAGS"
2034 CFLAGS="$CFLAGS $GNU_OBJC_CFLAGS"
2036 AC_CHECK_HEADER([AppKit/AppKit.h], [HAVE_NS=yes],
2037 [AC_MSG_ERROR([The include files (AppKit/AppKit.h etc) that
2038 are required for a Nextstep build are missing or cannot be compiled.
2039 Either fix this, or re-configure with the option '--without-ns'.])])
2042 if test "${NS_IMPL_COCOA}" = "yes"; then
2043 AC_MSG_CHECKING([for Mac OS X 10.6 or newer])
2044 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <AppKit/AppKit.h>],
2046 #ifdef MAC_OS_X_VERSION_MAX_ALLOWED
2047 #if MAC_OS_X_VERSION_MAX_ALLOWED >= 1060
2050 error "Mac OS X 10.6 or newer required";
2054 ns_osx_have_106=yes,
2056 AC_MSG_RESULT([$ns_osx_have_106])
2058 if test $ns_osx_have_106 = no; then
2059 AC_MSG_ERROR([Mac OS X 10.6 or newer is required]);
2064 AC_SUBST(LIBS_GNUSTEP)
2066 INSTALL_ARCH_INDEP_EXTRA=install-etc
2067 ns_self_contained=no
2070 if test "${HAVE_NS}" = yes; then
2071 if test "$with_toolkit_scroll_bars" = "no"; then
2072 AC_MSG_ERROR([Non-toolkit scroll bars are not implemented for Nextstep.])
2075 window_system=nextstep
2076 # set up packaging dirs
2077 if test "${EN_NS_SELF_CONTAINED}" = yes; then
2078 ns_self_contained=yes
2079 prefix=${ns_appresdir}
2080 exec_prefix=${ns_appbindir}
2081 dnl This one isn't really used, only archlibdir is.
2082 libexecdir="\${ns_appbindir}/libexec"
2083 archlibdir="\${ns_appbindir}/libexec"
2084 etcdocdir="\${ns_appresdir}/etc"
2085 etcdir="\${ns_appresdir}/etc"
2086 dnl FIXME maybe set datarootdir instead.
2087 dnl That would also get applications, icons, man.
2088 infodir="\${ns_appresdir}/info"
2089 mandir="\${ns_appresdir}/man"
2090 lispdir="\${ns_appresdir}/lisp"
2091 test "$locallisppathset" = no && locallisppath=""
2092 INSTALL_ARCH_INDEP_EXTRA=
2095 NS_OBJC_OBJ="nsterm.o nsfns.o nsmenu.o nsselect.o nsimage.o $ns_fontfile"
2097 CFLAGS="$tmp_CFLAGS"
2098 CPPFLAGS="$tmp_CPPFLAGS"
2099 AC_SUBST(INSTALL_ARCH_INDEP_EXTRA)
2100 AC_SUBST(ns_self_contained)
2102 AC_SUBST(NS_OBJC_OBJ)
2104 if test "${HAVE_NS}" = yes; then
2106 [if the Objective C compiler supports instancetype],
2107 [emacs_cv_objc_instancetype],
2108 [AC_LANG_PUSH([Objective C])
2110 [AC_LANG_SOURCE([[@interface Test
2111 + (instancetype)test;
2113 emacs_cv_objc_instancetype=yes,
2114 emacs_cv_objc_instancetype=no)
2115 AC_LANG_POP([Objective C])])
2117 if test x$emacs_cv_objc_instancetype = xyes ; then
2118 AC_DEFINE(NATIVE_OBJC_INSTANCETYPE, 1,
2119 [Define if ObjC compiler supports instancetype natively.])
2131 if test "${with_w32}" != no; then
2134 AC_CHECK_HEADER([windows.h], [HAVE_W32=yes],
2135 [AC_MSG_ERROR(['--with-w32' was specified, but windows.h
2136 cannot be found.])])
2139 ## Using --with-w32 with MinGW is a no-op, but we allow it.
2142 AC_MSG_ERROR([Using w32 with an autotools build is only supported for Cygwin and MinGW32.])
2147 if test "${opsys}" = "mingw32"; then
2148 AC_CACHE_CHECK([whether Windows API headers are recent enough], [emacs_cv_w32api],
2149 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
2150 #include <windows.h>
2151 #include <usp10.h>]],
2152 [[PIMAGE_NT_HEADERS pHeader;
2153 PIMAGE_SECTION_HEADER pSection = IMAGE_FIRST_SECTION(pHeader)]])],
2154 [emacs_cv_w32api=yes], [emacs_cv_w32api=no])])
2155 if test "${emacs_cv_w32api}" = "no"; then
2156 AC_MSG_ERROR([the Windows API headers are too old to support this build.])
2158 HAVE_W32=${emacs_cv_w32api}
2168 if test "${HAVE_W32}" = "yes"; then
2169 AC_DEFINE(HAVE_NTGUI, 1, [Define to use native MS Windows GUI.])
2170 if test "$with_toolkit_scroll_bars" = "no"; then
2171 AC_MSG_ERROR([Non-toolkit scroll bars are not implemented for w32 build.])
2173 AC_CHECK_TOOL(WINDRES, [windres],
2174 [AC_MSG_ERROR([No resource compiler found.])])
2175 W32_OBJ="w32fns.o w32menu.o w32reg.o w32font.o w32term.o"
2176 W32_OBJ="$W32_OBJ w32xfns.o w32select.o w32uniscribe.o w32cygwinx.o"
2177 EMACSRES="emacs.res"
2178 case "$canonical" in
2179 x86_64-*-*) EMACS_MANIFEST="emacs-x64.manifest" ;;
2180 *) EMACS_MANIFEST="emacs-x86.manifest" ;;
2182 dnl Construct something of the form "24,4,0,0" with 4 components.
2183 comma_version=`echo "${PACKAGE_VERSION}.0.0" | sed -e 's/\./,/g' -e 's/^\([[^,]]*,[[^,]]*,[[^,]]*,[[^,]]*\).*/\1/'`
2185 comma_space_version=`echo "$comma_version" | sed 's/,/, /g'`
2186 AC_SUBST(comma_version)
2187 AC_SUBST(comma_space_version)
2188 AC_CONFIG_FILES([nt/emacs.rc nt/emacsclient.rc])
2189 if test "${opsys}" = "cygwin"; then
2190 W32_LIBS="$W32_LIBS -lkernel32 -luser32 -lusp10 -lgdi32"
2191 W32_LIBS="$W32_LIBS -lole32 -lcomdlg32 -lcomctl32 -lwinspool"
2192 # Tell the linker that emacs.res is an object (which we compile from
2193 # the rc file), not a linker script.
2194 W32_RES_LINK="-Wl,emacs.res"
2196 W32_OBJ="$W32_OBJ w32.o w32console.o w32heap.o w32inevt.o w32proc.o"
2197 W32_LIBS="$W32_LIBS -lwinmm -lusp10 -lgdi32 -lcomdlg32"
2198 W32_LIBS="$W32_LIBS -lmpr -lwinspool -lole32 -lcomctl32"
2199 W32_RES_LINK="\$(EMACSRES)"
2200 CLIENTRES="emacsclient.res"
2201 CLIENTW="emacsclientw\$(EXEEXT)"
2202 FIRSTFILE_OBJ=firstfile.o
2205 LIBS_ECLIENT="-lcomctl32"
2206 LIB_WSOCK32="-lwsock32"
2207 NTLIB="ntlib.$ac_objext"
2208 XARGS_LIMIT="-s 10000"
2212 if test "${HAVE_W32}" = "no" && test "${opsys}" = "cygwin"; then
2213 W32_LIBS="-lkernel32"
2214 W32_OBJ="w32cygwinx.o"
2220 AC_SUBST(EMACS_MANIFEST)
2223 AC_SUBST(W32_RES_LINK)
2224 AC_SUBST(FIRSTFILE_OBJ)
2227 AC_SUBST(LIBS_ECLIENT)
2228 AC_SUBST(LIB_WSOCK32)
2230 AC_SUBST(XARGS_LIMIT)
2232 if test "${HAVE_W32}" = "yes"; then
2237 ## $window_system is now set to the window system we will
2245 case "${window_system}" in
2250 case "${with_x_toolkit}" in
2251 athena | lucid ) USE_X_TOOLKIT=LUCID ;;
2252 motif ) USE_X_TOOLKIT=MOTIF ;;
2254 term_header=gtkutil.h
2255 dnl Don't set this for GTK. A lot of tests below assumes Xt when
2256 dnl USE_X_TOOLKIT is set.
2257 USE_X_TOOLKIT=none ;;
2258 gtk2 ) with_gtk2=yes
2259 term_header=gtkutil.h
2260 USE_X_TOOLKIT=none ;;
2261 gtk3 ) with_gtk3=yes
2262 term_header=gtkutil.h
2263 USE_X_TOOLKIT=none ;;
2264 no ) USE_X_TOOLKIT=none ;;
2265 dnl If user did not say whether to use a toolkit, make this decision later:
2266 dnl use the toolkit if we have gtk, or X11R5 or newer.
2267 * ) USE_X_TOOLKIT=maybe ;;
2271 term_header=nsterm.h
2274 term_header=w32term.h
2278 if test "$window_system" = none && test "X$with_x" != "Xno"; then
2279 AC_CHECK_PROG(HAVE_XSERVER, X, true, false)
2280 if test "$HAVE_XSERVER" = true ||
2281 test -n "$DISPLAY" ||
2283 for emacs_libX11 in /usr/lib/libX11.*; do break; done
2284 test "$emacs_libX11" != '/usr/lib/libX11.*'
2287 AC_MSG_ERROR([You seem to be running X, but no X development libraries
2288 were found. You should install the relevant development files for X
2289 and for the toolkit you want, such as Gtk+ or Motif. Also make
2290 sure you have development files for image handling, i.e.
2291 tiff, gif, jpeg, png and xpm.
2292 If you are sure you want Emacs compiled without X window support, pass
2298 # Does the opsystem file prohibit the use of the GNU malloc?
2299 # Assume not, until told otherwise.
2303 [whether malloc is Doug Lea style],
2304 [emacs_cv_var_doug_lea_malloc],
2305 [emacs_cv_var_doug_lea_malloc=no
2306 dnl Hooks do not work with address sanitization.
2307 if test "$emacs_cv_sanitize_address" != yes; then
2310 [[#include <malloc.h>
2311 static void hook (void) {}]],
2312 [[malloc_set_state (malloc_get_state ());
2313 __after_morecore_hook = hook;
2314 __malloc_initialize_hook = hook;]])],
2315 [emacs_cv_var_doug_lea_malloc=yes])
2317 doug_lea_malloc=$emacs_cv_var_doug_lea_malloc
2322 test $with_unexec = yes &&
2324 ## darwin ld insists on the use of malloc routines in the System framework.
2325 darwin | mingw32 | nacl | sol2-10) ;;
2326 cygwin | qnxnto | freebsd)
2329 *) test "$ac_cv_func_sbrk" = yes && system_malloc=$emacs_cv_sanitize_address;;
2332 if test "${system_malloc}" != yes && test "${doug_lea_malloc}" != yes \
2333 && test "${UNEXEC_OBJ}" = unexelf.o; then
2339 if test "${system_malloc}" = "yes"; then
2340 AC_DEFINE([SYSTEM_MALLOC], 1,
2341 [Define to 1 to use the system memory allocator, even if it is not
2345 (The GNU allocators don't work with this system configuration.)"
2347 elif test "$hybrid_malloc" = yes; then
2348 AC_DEFINE(HYBRID_MALLOC, 1,
2349 [Define to use gmalloc before dumping and the system malloc after.])
2352 GNU_MALLOC_reason=" (only before dumping)"
2353 GMALLOC_OBJ=gmalloc.o
2356 test "$doug_lea_malloc" != "yes" && GMALLOC_OBJ=gmalloc.o
2357 VMLIMIT_OBJ=vm-limit.o
2359 AC_CHECK_HEADERS([sys/vlimit.h])
2360 AC_CACHE_CHECK([for data_start], [emacs_cv_data_start],
2363 [[extern char data_start[]; char ch;]],
2364 [[return data_start < &ch;]])],
2365 [emacs_cv_data_start=yes],
2366 [emacs_cv_data_start=no])])
2367 if test $emacs_cv_data_start = yes; then
2368 AC_DEFINE([HAVE_DATA_START], 1,
2369 [Define to 1 if data_start is the address of the start
2370 of the main data segment.])
2373 AC_SUBST([HYBRID_MALLOC])
2374 AC_SUBST(GMALLOC_OBJ)
2375 AC_SUBST(VMLIMIT_OBJ)
2377 if test "$doug_lea_malloc" = "yes" && test "$hybrid_malloc" != yes; then
2378 if test "$GNU_MALLOC" = yes ; then
2380 (Using Doug Lea's new malloc from the GNU C Library.)"
2382 AC_DEFINE(DOUG_LEA_MALLOC, 1,
2383 [Define to 1 if the system memory allocator is Doug Lea style,
2384 with malloc hooks and malloc_set_state.])
2386 ## Use mmap directly for allocating larger buffers.
2387 ## FIXME this comes from src/s/{gnu,gnu-linux}.h:
2388 ## #ifdef DOUG_LEA_MALLOC; #undef REL_ALLOC; #endif
2389 ## Does the AC_FUNC_MMAP test below make this check unnecessary?
2391 mingw32|gnu*) REL_ALLOC=no ;;
2395 if test x"${REL_ALLOC}" = x; then
2396 REL_ALLOC=${GNU_MALLOC}
2399 use_mmap_for_buffers=no
2401 mingw32) use_mmap_for_buffers=yes ;;
2405 if test $use_mmap_for_buffers = yes; then
2406 AC_DEFINE(USE_MMAP_FOR_BUFFERS, 1, [Define to use mmap to allocate buffer text.])
2410 LIBS="$LIBS_SYSTEM $LIBS"
2412 dnl FIXME replace main with a function we actually want from this library.
2413 AC_CHECK_LIB(Xbsd, main, LD_SWITCH_X_SITE="$LD_SWITCH_X_SITE -lXbsd")
2415 dnl Check for the POSIX thread library.
2417 AC_CHECK_HEADERS_ONCE(pthread.h)
2418 if test "$ac_cv_header_pthread_h" && test "$opsys" != "mingw32"; then
2419 AC_CACHE_CHECK([for pthread library],
2420 [emacs_cv_pthread_lib],
2421 [emacs_cv_pthread_lib=no
2423 for emacs_pthread_lib in 'none needed' -lpthread; do
2424 case $emacs_pthread_lib in
2425 -*) LIBS="$OLD_LIBS $emacs_pthread_lib";;
2429 [[#include <pthread.h>
2431 sigset_t old_mask, new_mask;
2432 void noop (void) {}]],
2433 [[pthread_t th = pthread_self ();
2435 status += pthread_create (&th, 0, 0, 0);
2436 status += pthread_sigmask (SIG_BLOCK, &new_mask, &old_mask);
2437 status += pthread_kill (th, 0);
2438 #if ! (defined SYSTEM_MALLOC || defined HYBRID_MALLOC \
2439 || defined DOUG_LEA_MALLOC)
2440 /* Test for pthread_atfork only if gmalloc uses it,
2441 as older-style hosts like MirBSD 10 lack it. */
2442 status += pthread_atfork (noop, noop, noop);
2445 [emacs_cv_pthread_lib=$emacs_pthread_lib])
2447 if test "$emacs_cv_pthread_lib" != no; then
2451 if test "$emacs_cv_pthread_lib" != no; then
2452 AC_DEFINE([HAVE_PTHREAD], 1, [Define to 1 if you have POSIX threads.])
2453 case $emacs_cv_pthread_lib in
2454 -*) LIB_PTHREAD=$emacs_cv_pthread_lib;;
2456 ac_cv_func_pthread_sigmask=yes
2457 # Some systems optimize for single-threaded programs by default, and
2458 # need special flags to disable these optimizations. For example, the
2459 # definition of 'errno' in <errno.h>.
2462 AC_DEFINE([_REENTRANT], 1,
2463 [Define to 1 if your system requires this in multithreaded code.]);;
2465 AC_DEFINE([_THREAD_SAFE], 1,
2466 [Define to 1 if your system requires this in multithreaded code.]);;
2470 AC_SUBST([LIB_PTHREAD])
2472 AC_MSG_CHECKING([for thread support])
2474 if test "$with_threads" = yes; then
2475 if test "$emacs_cv_pthread_lib" != no; then
2476 AC_DEFINE(THREADS_ENABLED, 1,
2477 [Define to 1 if you want elisp thread support.])
2479 elif test "${opsys}" = "mingw32"; then
2480 dnl MinGW can do native Windows threads even without pthreads
2481 AC_DEFINE(THREADS_ENABLED, 1,
2482 [Define to 1 if you want elisp thread support.])
2486 AC_MSG_RESULT([$threads_enabled])
2488 dnl Check for need for bigtoc support on IBM AIX
2492 AC_CACHE_CHECK([for -bbigtoc option], [gdb_cv_bigtoc], [
2494 yes) gdb_cv_bigtoc=-Wl,-bbigtoc ;;
2495 *) gdb_cv_bigtoc=-bbigtoc ;;
2498 LDFLAGS=$LDFLAGS\ $gdb_cv_bigtoc
2499 AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[int i;]])], [], [gdb_cv_bigtoc=])
2504 # Change CFLAGS, CPPFLAGS, and LIBS temporarily so that C_SWITCH_X_SITE
2505 # is for the tests that follow. We set them back later on.
2507 REAL_CFLAGS="$CFLAGS"
2508 REAL_CPPFLAGS="$CPPFLAGS"
2511 if test "${HAVE_X11}" = "yes"; then
2512 DEFS="$C_SWITCH_X_SITE $DEFS"
2513 LDFLAGS="$LDFLAGS $LD_SWITCH_X_SITE"
2515 CFLAGS="$C_SWITCH_X_SITE $CFLAGS"
2516 CPPFLAGS="$C_SWITCH_X_SITE $CPPFLAGS"
2518 # On Solaris, arrange for LD_RUN_PATH to point to the X libraries for tests.
2519 # This is handled by LD_SWITCH_X_SITE_RPATH during the real build,
2520 # but it's more convenient here to set LD_RUN_PATH since this
2521 # also works on hosts that don't understand LD_SWITCH_X_SITE_RPATH.
2522 if test "${x_libraries}" != NONE && test -n "${x_libraries}"; then
2523 LD_RUN_PATH=$x_libraries${LD_RUN_PATH+:}$LD_RUN_PATH
2527 if test "${opsys}" = "gnu-linux"; then
2528 AC_CACHE_CHECK([whether X on GNU/Linux needs -b to link], [emacs_cv_b_link],
2529 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],
2530 [[XOpenDisplay ("foo");]])],
2531 [xgnu_linux_first_failure=no],
2532 [xgnu_linux_first_failure=yes])
2533 if test "${xgnu_linux_first_failure}" = "yes"; then
2534 OLD_CPPFLAGS="$CPPFLAGS"
2536 CPPFLAGS="$CPPFLAGS -b i486-linuxaout"
2537 LIBS="$LIBS -b i486-linuxaout"
2538 AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],
2539 [[XOpenDisplay ("foo");]])],
2540 [xgnu_linux_second_failure=no],
2541 [xgnu_linux_second_failure=yes])
2542 if test "${xgnu_linux_second_failure}" = "yes"; then
2543 # If we get the same failure with -b, there is no use adding -b.
2544 # So leave it out. This plays safe.
2549 CPPFLAGS=$OLD_CPPFLAGS
2554 if test "x$emacs_cv_b_link" = xyes ; then
2555 LD_SWITCH_X_SITE="$LD_SWITCH_X_SITE -b i486-linuxaout"
2556 C_SWITCH_X_SITE="$C_SWITCH_X_SITE -b i486-linuxaout"
2560 # Reportedly, some broken Solaris systems have XKBlib.h but are missing
2561 # header files included from there.
2562 AC_CACHE_CHECK([for Xkb], [emacs_cv_xkb],
2563 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Xlib.h>
2564 #include <X11/XKBlib.h>]],
2565 [[XkbDescPtr kb = XkbGetKeyboard (0, XkbAllComponentsMask, XkbUseCoreKbd);]])],
2566 emacs_cv_xkb=yes, emacs_cv_xkb=no)])
2567 if test $emacs_cv_xkb = yes; then
2568 AC_DEFINE(HAVE_XKB, 1, [Define to 1 if you have the Xkb extension.])
2571 AC_CHECK_FUNCS(XrmSetDatabase XScreenResourceString \
2572 XScreenNumberOfScreen)
2575 if test "${window_system}" = "x11"; then
2576 AC_MSG_CHECKING(X11 version 6)
2577 AC_CACHE_VAL(emacs_cv_x11_version_6,
2578 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Xlib.h>]],
2579 [[#if XlibSpecificationRelease < 6
2582 ]])], emacs_cv_x11_version_6=yes, emacs_cv_x11_version_6=no)])
2583 if test $emacs_cv_x11_version_6 = yes; then
2584 AC_MSG_RESULT(6 or newer)
2585 AC_DEFINE(HAVE_X11R6, 1,
2586 [Define to 1 if you have the X11R6 or newer version of Xlib.])
2587 AC_DEFINE(HAVE_X_I18N, 1, [Define if you have usable i18n support.])
2588 ## inoue@ainet.or.jp says Solaris has a bug related to X11R6-style
2592 *) AC_DEFINE(HAVE_X11R6_XIM, 1,
2593 [Define if you have usable X11R6-style XIM support.])
2597 AC_MSG_RESULT(before 6)
2602 ### Use -lrsvg-2 if available, unless '--with-rsvg=no' is specified.
2604 if test "${HAVE_X11}" = "yes" || test "${HAVE_NS}" = "yes" || test "${opsys}" = "mingw32"; then
2605 if test "${with_rsvg}" != "no"; then
2606 RSVG_REQUIRED=2.14.0
2607 RSVG_MODULE="librsvg-2.0 >= $RSVG_REQUIRED"
2609 EMACS_CHECK_MODULES([RSVG], [$RSVG_MODULE])
2610 AC_SUBST(RSVG_CFLAGS)
2613 if test $HAVE_RSVG = yes; then
2614 AC_DEFINE(HAVE_RSVG, 1, [Define to 1 if using librsvg.])
2615 CFLAGS="$CFLAGS $RSVG_CFLAGS"
2616 # Windows loads librsvg dynamically
2617 if test "${opsys}" = "mingw32"; then
2625 if test "${HAVE_X11}" = "yes" || test "${HAVE_NS}" = "yes" || test "${HAVE_W32}" = "yes"; then
2626 if test "${with_imagemagick}" != "no"; then
2627 if test -n "$BREW"; then
2628 # Homebrew doesn't link ImageMagick 6 by default, so make sure
2629 # pkgconfig can find it.
2630 export PKG_CONFIG_PATH="$PKG_CONFIG_PATH$PATH_SEPARATOR`$BREW --prefix imagemagick@6 2>/dev/null`/lib/pkgconfig"
2633 EMACS_CHECK_MODULES([IMAGEMAGICK], [MagickWand >= 7])
2634 if test $HAVE_IMAGEMAGICK = yes; then
2635 AC_DEFINE([HAVE_IMAGEMAGICK7], 1, [Define to 1 if using ImageMagick7.])
2637 ## 6.3.5 is the earliest version known to work; see Bug#17339.
2638 ## 6.8.2 makes Emacs crash; see Bug#13867.
2639 EMACS_CHECK_MODULES([IMAGEMAGICK], [Wand >= 6.3.5 Wand != 6.8.2])
2642 if test $HAVE_IMAGEMAGICK = yes; then
2645 CFLAGS="$CFLAGS $IMAGEMAGICK_CFLAGS"
2646 LIBS="$IMAGEMAGICK_LIBS $LIBS"
2647 AC_CHECK_FUNCS([MagickRelinquishMemory MagickExportImagePixels \
2648 MagickMergeImageLayers MagickAutoOrientImage])
2651 # Check that ImageMagick links. It does not link on Fedora 25
2652 # with './configure CC=clang', as pkg-config outputs flags like
2653 # -lomp that work for GCC but not Clang.
2654 if test "$ac_cv_func_MagickRelinquishMemory" != yes; then
2658 if test $HAVE_IMAGEMAGICK = yes; then
2659 AC_DEFINE([HAVE_IMAGEMAGICK], 1, [Define to 1 if using ImageMagick.])
2664 AC_SUBST([IMAGEMAGICK_CFLAGS])
2665 AC_SUBST([IMAGEMAGICK_LIBS])
2669 AC_CHECK_LIB(anl, getaddrinfo_a, HAVE_GETADDRINFO_A=yes)
2670 if test "${HAVE_GETADDRINFO_A}" = "yes"; then
2671 AC_DEFINE(HAVE_GETADDRINFO_A, 1,
2672 [Define to 1 if you have getaddrinfo_a for asynchronous DNS resolution.])
2673 GETADDRINFO_A_LIBS="-lanl"
2674 AC_SUBST(GETADDRINFO_A_LIBS)
2679 gtk_term_header=$term_header
2682 if test "${opsys}" != "mingw32"; then
2683 if test "${with_gtk3}" = "yes" || test "${with_gtk}" = "yes" || test "$USE_X_TOOLKIT" = "maybe"; then
2684 GLIB_REQUIRED=2.37.5
2686 GTK_MODULES="gtk+-3.0 >= $GTK_REQUIRED glib-2.0 >= $GLIB_REQUIRED"
2688 dnl Checks for libraries.
2689 EMACS_CHECK_MODULES([GTK], [$GTK_MODULES],
2690 [pkg_check_gtk=yes], [pkg_check_gtk=no])
2691 if test "$pkg_check_gtk" = "no" && test "$with_gtk3" = "yes"; then
2692 AC_MSG_ERROR($GTK_PKG_ERRORS)
2694 if test "$pkg_check_gtk" = "yes"; then
2695 AC_DEFINE(HAVE_GTK3, 1, [Define to 1 if using GTK 3 or later.])
2696 GTK_OBJ=emacsgtkfixed.o
2697 gtk_term_header=gtkutil.h
2698 USE_GTK_TOOLKIT="GTK3"
2699 if test "x$ac_enable_gtk_deprecation_warnings" = x; then
2700 AC_DEFINE([GDK_DISABLE_DEPRECATION_WARNINGS], [1],
2701 [Define to 1 to disable GTK+/GDK deprecation warnings.])
2702 AC_DEFINE([GLIB_DISABLE_DEPRECATION_WARNINGS], [1],
2703 [Define to 1 to disable Glib deprecation warnings.])
2707 gtk3_pkg_errors="$GTK_PKG_ERRORS "
2711 if test "${with_gtk2}" = "yes" || test "$check_gtk2" = "yes"; then
2714 GTK_MODULES="gtk+-2.0 >= $GTK_REQUIRED glib-2.0 >= $GLIB_REQUIRED"
2716 dnl Checks for libraries.
2717 EMACS_CHECK_MODULES([GTK], [$GTK_MODULES],
2718 [pkg_check_gtk=yes], [pkg_check_gtk=no])
2719 if test "$pkg_check_gtk" = "no" &&
2720 { test "$with_gtk" = yes || test "$with_gtk2" = "yes"; }
2722 AC_MSG_ERROR($gtk3_pkg_errors$GTK_PKG_ERRORS)
2724 test "$pkg_check_gtk" = "yes" && USE_GTK_TOOLKIT="GTK2"
2731 if test x"$pkg_check_gtk" = xyes; then
2734 CFLAGS="$CFLAGS $GTK_CFLAGS"
2735 LIBS="$GTK_LIBS $LIBS"
2736 dnl Try to compile a simple GTK program.
2737 AC_CACHE_CHECK([whether GTK compiles], [emacs_cv_gtk_compiles],
2740 [[/* Check the Gtk and Glib APIs. */
2741 #include <gtk/gtk.h>
2742 #include <glib-object.h>
2744 callback (GObject *go, GParamSpec *spec, gpointer user_data)
2748 GtkSettings *gs = 0;
2749 /* Use G_CALLBACK to make sure function pointers can be cast to void *;
2750 strict C prohibits this. Use gtk_main_iteration to test that the
2751 libraries are there. */
2752 if (g_signal_handler_find (G_OBJECT (gs), G_SIGNAL_MATCH_FUNC,
2753 0, 0, 0, G_CALLBACK (callback), 0))
2754 gtk_main_iteration ();
2756 [emacs_cv_gtk_compiles=yes], [emacs_cv_gtk_compiles=no])])
2757 if test "${emacs_cv_gtk_compiles}" != "yes"; then
2759 if test "$USE_X_TOOLKIT" != "maybe"; then
2760 AC_MSG_ERROR([Gtk+ wanted, but it does not compile, see config.log. Maybe some x11-devel files missing?]);
2763 C_SWITCH_X_SITE="$C_SWITCH_X_SITE $GTK_CFLAGS"
2765 AC_DEFINE(USE_GTK, 1, [Define to 1 if using GTK.])
2766 GTK_OBJ="gtkutil.o $GTK_OBJ"
2767 term_header=$gtk_term_header
2769 AC_MSG_WARN([[Your version of Gtk+ will have problems with
2770 closing open displays. This is no problem if you just use
2771 one display, but if you use more than one and close one of them
2773 See https://gitlab.gnome.org/GNOME/gtk/issues/221]])
2780 if test "${HAVE_GTK}" = "yes"; then
2782 dnl GTK scrollbars resemble toolkit scrollbars a lot, so to avoid
2783 dnl a lot if #ifdef:s, say we have toolkit scrollbars.
2784 if test "$with_toolkit_scroll_bars" != no; then
2785 with_toolkit_scroll_bars=yes
2788 term_header=gtkutil.h
2790 if test "${USE_GTK_TOOLKIT}" = GTK2; then
2792 dnl Check if we have the old file selection dialog declared and
2793 dnl in the link library. In 2.x it may be in the library,
2794 dnl but not declared if deprecated featured has been selected out.
2795 dnl AC_CHECK_DECL checks for a macro, so check for GTK_TYPE_FILE_SELECTION.
2796 HAVE_GTK_FILE_SELECTION=no
2797 AC_CHECK_DECL(GTK_TYPE_FILE_SELECTION, HAVE_GTK_FILE_SELECTION=yes,
2798 HAVE_GTK_FILE_SELECTION=no, [AC_INCLUDES_DEFAULT
2799 #include <gtk/gtk.h>])
2800 if test "$HAVE_GTK_FILE_SELECTION" = yes; then
2801 AC_CHECK_FUNCS(gtk_file_selection_new)
2804 dnl This procedure causes a bug on certain Ubuntu GTK+2 builds
2805 AC_CHECK_FUNCS(gtk_window_set_has_resize_grip)
2810 dnl Enable xwidgets if GTK3 and WebKitGTK+ are available.
2813 if test "$with_xwidgets" != "no"; then
2814 test "$USE_GTK_TOOLKIT" = "GTK3" && test "$window_system" != "none" ||
2815 AC_MSG_ERROR([xwidgets requested but gtk3 not used.])
2817 WEBKIT_REQUIRED=2.12
2818 WEBKIT_MODULES="webkit2gtk-4.0 >= $WEBKIT_REQUIRED"
2819 EMACS_CHECK_MODULES([WEBKIT], [$WEBKIT_MODULES])
2820 HAVE_XWIDGETS=$HAVE_WEBKIT
2821 test $HAVE_XWIDGETS = yes ||
2822 AC_MSG_ERROR([xwidgets requested but WebKitGTK+ not found.])
2824 XWIDGETS_OBJ=xwidget.o
2825 AC_DEFINE([HAVE_XWIDGETS], 1, [Define to 1 if you have xwidgets support.])
2827 AC_SUBST(XWIDGETS_OBJ)
2832 dnl D-Bus has been tested under GNU/Linux only. Must be adapted for
2833 dnl other platforms.
2836 if test "${with_dbus}" = "yes"; then
2837 EMACS_CHECK_MODULES([DBUS], [dbus-1 >= 1.0])
2838 if test "$HAVE_DBUS" = yes; then
2839 AC_DEFINE(HAVE_DBUS, 1, [Define to 1 if using D-Bus.])
2840 dnl dbus_watch_get_unix_fd has been introduced in D-Bus 1.1.1.
2841 dnl dbus_type_is_valid and dbus_validate_* have been introduced in
2844 LIBS="$LIBS $DBUS_LIBS"
2845 AC_CHECK_FUNCS(dbus_watch_get_unix_fd \
2846 dbus_type_is_valid \
2847 dbus_validate_bus_name \
2848 dbus_validate_path \
2849 dbus_validate_interface \
2850 dbus_validate_member)
2855 AC_SUBST(DBUS_CFLAGS)
2859 dnl GSettings has been tested under GNU/Linux only.
2861 if test "${HAVE_X11}" = "yes" && test "${with_gsettings}" = "yes"; then
2862 EMACS_CHECK_MODULES([GSETTINGS], [gio-2.0 >= 2.26])
2863 if test "$HAVE_GSETTINGS" = "yes"; then
2865 CFLAGS="$CFLAGS $GSETTINGS_CFLAGS"
2867 LIBS="$LIBS $GSETTINGS_LIBS"
2868 AC_CACHE_CHECK([whether GSettings is in gio], [emacs_cv_gsettings_in_gio],
2871 [[/* Check that gsettings really is present. */
2872 #include <glib-object.h>
2873 #include <gio/gio.h>
2876 GSettings *settings;
2877 GVariant *val = g_settings_get_value (settings, "");
2879 [emacs_cv_gsettings_in_gio=yes], [emacs_cv_gsettings_in_gio=no])])
2881 if test "$emacs_cv_gsettings_in_gio" = "yes"; then
2882 AC_DEFINE(HAVE_GSETTINGS, 1, [Define to 1 if using GSettings.])
2883 SETTINGS_CFLAGS="$GSETTINGS_CFLAGS"
2884 SETTINGS_LIBS="$GSETTINGS_LIBS"
2885 test "$with_gconf" = "yes" || with_gconf=no
2892 dnl GConf has been tested under GNU/Linux only.
2893 dnl The version is really arbitrary, it is about the same age as Gtk+ 2.6.
2895 if test "${HAVE_X11}" = "yes" && test "${with_gconf}" != "no"; then
2896 EMACS_CHECK_MODULES([GCONF], [gconf-2.0 >= 2.13])
2897 if test "$HAVE_GCONF" = yes; then
2898 AC_DEFINE(HAVE_GCONF, 1, [Define to 1 if using GConf.])
2899 dnl Newer GConf doesn't link with g_objects, so this is not defined.
2900 SETTINGS_CFLAGS="$SETTINGS_CFLAGS $GCONF_CFLAGS"
2901 SETTINGS_LIBS="$SETTINGS_LIBS $GCONF_LIBS"
2905 if test "$HAVE_GSETTINGS" = "yes" || test "$HAVE_GCONF" = "yes"; then
2906 EMACS_CHECK_MODULES([GOBJECT], [gobject-2.0 >= 2.0])
2907 if test "$HAVE_GOBJECT" = "yes"; then
2908 SETTINGS_CFLAGS="$SETTINGS_CFLAGS $GOBJECT_CFLAGS"
2909 SETTINGS_LIBS="$SETTINGS_LIBS $GOBJECT_LIBS"
2911 SAVE_CFLAGS="$CFLAGS"
2913 CFLAGS="$SETTINGS_CFLAGS $CFLAGS"
2914 LIBS="$SETTINGS_LIBS $LIBS"
2915 CFLAGS="$SAVE_CFLAGS"
2918 AC_SUBST(SETTINGS_CFLAGS)
2919 AC_SUBST(SETTINGS_LIBS)
2922 dnl SELinux is available for GNU/Linux only.
2925 if test "${with_selinux}" = "yes"; then
2926 AC_CHECK_LIB([selinux], [lgetfilecon], HAVE_LIBSELINUX=yes, HAVE_LIBSELINUX=no)
2927 if test "$HAVE_LIBSELINUX" = yes; then
2928 AC_DEFINE(HAVE_LIBSELINUX, 1, [Define to 1 if using SELinux.])
2929 LIBSELINUX_LIBS=-lselinux
2932 AC_SUBST(LIBSELINUX_LIBS)
2935 if test "${with_gnutls}" != "no" ; then
2936 EMACS_CHECK_MODULES([LIBGNUTLS], [gnutls >= 2.12.2],
2937 [HAVE_GNUTLS=yes], [HAVE_GNUTLS=no])
2938 if test "${HAVE_GNUTLS}" = "yes"; then
2939 AC_DEFINE(HAVE_GNUTLS, 1, [Define if using GnuTLS.])
2942 # Windows loads GnuTLS dynamically
2943 if test "${opsys}" = "mingw32"; then
2948 AC_SUBST(LIBGNUTLS_LIBS)
2949 AC_SUBST(LIBGNUTLS_CFLAGS)
2952 if test "${with_libsystemd}" = "yes" ; then
2953 dnl This code has been tested with libsystemd 222 and later.
2954 dnl FIXME: Find the earliest version number for which Emacs should work,
2955 dnl and change '222' to that number.
2956 EMACS_CHECK_MODULES([LIBSYSTEMD], [libsystemd >= 222],
2957 [HAVE_LIBSYSTEMD=yes], [HAVE_LIBSYSTEMD=no])
2958 if test "${HAVE_LIBSYSTEMD}" = "yes"; then
2959 AC_DEFINE(HAVE_LIBSYSTEMD, 1, [Define if using libsystemd.])
2963 AC_SUBST(LIBSYSTEMD_LIBS)
2964 AC_SUBST(LIBSYSTEMD_CFLAGS)
2969 if test "${with_json}" = yes; then
2970 EMACS_CHECK_MODULES([JSON], [jansson >= 2.7],
2971 [HAVE_JSON=yes], [HAVE_JSON=no])
2972 if test "${HAVE_JSON}" = yes; then
2973 AC_DEFINE(HAVE_JSON, 1, [Define if using Jansson.])
2977 # Windows loads libjansson dynamically
2978 if test "${opsys}" = "mingw32"; then
2984 AC_SUBST(JSON_CFLAGS)
2990 dnl MS Windows native file monitor is available for mingw32 only.
2991 case $with_file_notification,$opsys in
2993 AC_MSG_ERROR(['--with-file-notification=w32' was specified, but
2994 this is only supported on MS-Windows native and MinGW32 builds.
2995 Consider using gfile instead.])
2997 w32,* | yes,mingw32)
2998 AC_CHECK_HEADER(windows.h)
2999 if test "$ac_cv_header_windows_h" = yes ; then
3000 AC_DEFINE(HAVE_W32NOTIFY, 1, [Define to 1 to use w32notify.])
3001 NOTIFY_OBJ=w32notify.o
3002 NOTIFY_SUMMARY="yes (w32)"
3006 dnl inotify is available only on GNU/Linux.
3007 case $with_file_notification,$NOTIFY_OBJ in
3009 AC_CHECK_HEADER(sys/inotify.h)
3010 if test "$ac_cv_header_sys_inotify_h" = yes ; then
3011 AC_CHECK_FUNC(inotify_init1)
3012 if test "$ac_cv_func_inotify_init1" = yes; then
3013 AC_DEFINE(HAVE_INOTIFY, 1, [Define to 1 to use inotify.])
3014 NOTIFY_OBJ=inotify.o
3015 NOTIFY_SUMMARY="yes -lglibc (inotify)"
3020 dnl kqueue is available on BSD-like systems.
3021 case $with_file_notification,$NOTIFY_OBJ in
3023 EMACS_CHECK_MODULES([KQUEUE], [libkqueue])
3024 if test "$HAVE_KQUEUE" = "yes"; then
3025 AC_DEFINE(HAVE_KQUEUE, 1, [Define to 1 to use kqueue.])
3026 CPPFLAGS="$CPPFLAGS -I/usr/include/kqueue"
3027 NOTIFY_CFLAGS=$KQUEUE_CFLAGS
3028 NOTIFY_LIBS=$KQUEUE_LIBS
3030 NOTIFY_SUMMARY="yes -lkqueue"
3032 AC_SEARCH_LIBS(kqueue, [])
3033 if test "$ac_cv_search_kqueue" != no; then
3034 AC_DEFINE(HAVE_KQUEUE, 1, [Define to 1 to use kqueue.])
3036 NOTIFY_SUMMARY="yes (kqueue)"
3041 dnl g_file_monitor exists since glib 2.18. G_FILE_MONITOR_EVENT_MOVED
3042 dnl has been added in glib 2.24. It has been tested under
3044 case $with_file_notification,$NOTIFY_OBJ in
3046 if test "${HAVE_NS}" = yes; then
3047 AC_MSG_ERROR(['--with-file-notification=gfile' is not supported in NextStep builds.
3048 Consider kqueue instead.])
3050 EMACS_CHECK_MODULES([GFILENOTIFY], [gio-2.0 >= 2.24])
3051 if test "$HAVE_GFILENOTIFY" = "yes"; then
3052 AC_DEFINE(HAVE_GFILENOTIFY, 1, [Define to 1 if using GFile.])
3053 NOTIFY_CFLAGS=$GFILENOTIFY_CFLAGS
3054 NOTIFY_LIBS=$GFILENOTIFY_LIBS
3055 NOTIFY_OBJ=gfilenotify.o
3056 NOTIFY_SUMMARY="yes -lgio (gfile)"
3061 case $with_file_notification,$NOTIFY_OBJ in
3062 yes,* | no,* | *,?*) ;;
3063 *) AC_MSG_ERROR([File notification '$with_file_notification' requested but requirements not found.]) ;;
3066 if test -n "$NOTIFY_OBJ"; then
3067 AC_DEFINE(USE_FILE_NOTIFY, 1, [Define to 1 if using file notifications.])
3069 AC_SUBST(NOTIFY_CFLAGS)
3070 AC_SUBST(NOTIFY_LIBS)
3071 AC_SUBST(NOTIFY_OBJ)
3073 dnl Do not put whitespace before the #include statements below.
3074 dnl Older compilers (eg sunos4 cc) choke on it.
3077 if test x"${USE_X_TOOLKIT}" = xmaybe || test x"${USE_X_TOOLKIT}" = xLUCID; then
3078 if test "$with_xaw3d" != no; then
3079 AC_CACHE_VAL(emacs_cv_xaw3d,
3080 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[
3081 #include <X11/Intrinsic.h>
3082 #include <X11/Xaw3d/Simple.h>]],
3084 [AC_CHECK_LIB(Xaw3d, XawScrollbarSetThumb,
3085 emacs_cv_xaw3d=yes, emacs_cv_xaw3d=no)],
3086 emacs_cv_xaw3d=no)])
3090 if test $emacs_cv_xaw3d = yes; then
3091 AC_MSG_CHECKING(for xaw3d)
3092 AC_MSG_RESULT([yes; using Lucid toolkit])
3096 AC_DEFINE(HAVE_XAW3D, 1,
3097 [Define to 1 if you have the Xaw3d library (-lXaw3d).])
3099 AC_MSG_CHECKING(for xaw3d)
3101 AC_MSG_CHECKING(for libXaw)
3102 AC_CACHE_VAL(emacs_cv_xaw,
3103 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[
3104 #include <X11/Intrinsic.h>
3105 #include <X11/Xaw/Simple.h>]],
3109 if test $emacs_cv_xaw = yes; then
3110 AC_MSG_RESULT([yes; using Lucid toolkit])
3113 elif test x"${USE_X_TOOLKIT}" = xLUCID; then
3114 AC_MSG_ERROR([Lucid toolkit requires X11/Xaw include files])
3116 AC_MSG_ERROR([No X toolkit could be found.
3117 If you are sure you want Emacs compiled without an X toolkit, pass
3119 to configure. Otherwise, install the development libraries for the toolkit
3120 that you want to use (e.g. Gtk+) and re-run configure.])
3125 X_TOOLKIT_TYPE=$USE_X_TOOLKIT
3129 if test "${USE_X_TOOLKIT}" != "none"; then
3130 AC_MSG_CHECKING(X11 toolkit version)
3131 AC_CACHE_VAL(emacs_cv_x11_toolkit_version_6,
3132 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Intrinsic.h>]],
3133 [[#if XtSpecificationRelease < 6
3136 ]])], emacs_cv_x11_toolkit_version_6=yes, emacs_cv_x11_toolkit_version_6=no)])
3137 HAVE_X11XTR6=$emacs_cv_x11_toolkit_version_6
3138 if test $emacs_cv_x11_toolkit_version_6 = yes; then
3139 AC_MSG_RESULT(6 or newer)
3140 AC_DEFINE(HAVE_X11XTR6, 1,
3141 [Define to 1 if you have the X11R6 or newer version of Xt.])
3142 LIBXTR6="-lSM -lICE"
3144 ## Use libw.a along with X11R6 Xt.
3145 unixware) LIBXTR6="$LIBXTR6 -lw" ;;
3148 AC_MSG_RESULT(before 6)
3151 dnl If using toolkit, check whether libXmu.a exists.
3152 dnl tranle@intellicorp.com says libXmu.a can need XtMalloc in libXt.a to link.
3154 if test x$HAVE_X11XTR6 = xyes; then
3155 OTHERLIBS='-lXt -lSM -lICE'
3159 AC_SEARCH_LIBS([XmuConvertStandardSelection], [Xmu], [], [], [$OTHERLIBS])
3160 if test "X$LIBS" != "X$OLDLIBS"; then
3161 LIBXMU=$ac_cv_search_XmuConvertStandardSelection
3164 dnl ac_cv_search_XmuConvertStandardSelection is also referenced below.
3170 if test "${USE_X_TOOLKIT}" = "MOTIF"; then
3171 # OpenMotif may be installed in such a way on some GNU/Linux systems.
3172 if test -d /usr/include/openmotif; then
3173 CPPFLAGS="-I/usr/include/openmotif $CPPFLAGS"
3174 emacs_cv_openmotif=yes
3175 case "$canonical" in
3176 x86_64-*-linux-gnu* | powerpc64-*-linux-gnu* | sparc64-*-linux-gnu*)
3177 test -d /usr/lib64/openmotif && LDFLAGS="-L/usr/lib64/openmotif $LDFLAGS"
3180 test -d /usr/lib/openmotif && LDFLAGS="-L/usr/lib/openmotif $LDFLAGS"
3183 emacs_cv_openmotif=no
3185 AC_CACHE_CHECK(for (Open)Motif version 2.1, emacs_cv_motif_version_2_1,
3186 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <Xm/Xm.h>]],
3187 [[#if XmVERSION > 2 || (XmVERSION == 2 && XmREVISION >= 1)
3190 Motif version prior to 2.1.
3192 emacs_cv_motif_version_2_1=yes, emacs_cv_motif_version_2_1=no)])
3193 if test $emacs_cv_motif_version_2_1 = yes; then
3194 AC_CHECK_LIB(Xp, XpCreateContext, LIBXP=-lXp)
3195 if test x$emacs_cv_openmotif = xyes; then
3196 REAL_CPPFLAGS="-I/usr/include/openmotif $REAL_CPPFLAGS"
3199 AC_CACHE_CHECK(for LessTif where some systems put it, emacs_cv_lesstif,
3200 # We put this in CFLAGS temporarily to precede other -I options
3201 # that might be in CFLAGS temporarily.
3202 # We put this in CPPFLAGS where it precedes the other -I options.
3203 OLD_CPPFLAGS=$CPPFLAGS
3205 CPPFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $CPPFLAGS"
3206 CFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $CFLAGS"
3207 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include </usr/X11R6/LessTif/Motif1.2/include/Xm/Xm.h>]],
3209 emacs_cv_lesstif=yes, emacs_cv_lesstif=no)])
3210 if test $emacs_cv_lesstif = yes; then
3211 # Make sure this -I option remains in CPPFLAGS after it is set
3212 # back to REAL_CPPFLAGS.
3213 # There is no need to change REAL_CFLAGS, because REAL_CFLAGS does not
3214 # have those other -I options anyway. Ultimately, having this
3215 # directory ultimately in CPPFLAGS will be enough.
3216 REAL_CPPFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $REAL_CPPFLAGS"
3217 LDFLAGS="-L/usr/X11R6/LessTif/Motif1.2/lib $LDFLAGS"
3220 CPPFLAGS=$OLD_CPPFLAGS
3223 AC_CHECK_HEADER([Xm/BulletinB.h], [],
3224 [AC_MSG_ERROR([Motif toolkit requested but requirements not found.])])
3227 dnl Use toolkit scroll bars if configured for GTK or X toolkit and either
3228 dnl using Motif or Xaw3d is available, and unless
3229 dnl --with-toolkit-scroll-bars=no was specified.
3231 AH_TEMPLATE(USE_TOOLKIT_SCROLL_BARS,
3232 [Define to 1 if we should use toolkit scroll bars.])dnl
3233 USE_TOOLKIT_SCROLL_BARS=no
3234 if test "${with_toolkit_scroll_bars}" != "no"; then
3235 if test "${USE_X_TOOLKIT}" != "none"; then
3236 if test "${USE_X_TOOLKIT}" = "MOTIF"; then
3237 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3239 USE_TOOLKIT_SCROLL_BARS=yes
3240 elif test "${HAVE_XAW3D}" = "yes" || test "${USE_X_TOOLKIT}" = "LUCID"; then
3241 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3242 USE_TOOLKIT_SCROLL_BARS=yes
3244 elif test "${HAVE_GTK}" = "yes"; then
3245 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3246 USE_TOOLKIT_SCROLL_BARS=yes
3247 elif test "${HAVE_NS}" = "yes"; then
3248 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3249 USE_TOOLKIT_SCROLL_BARS=yes
3250 elif test "${HAVE_W32}" = "yes"; then
3251 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3252 USE_TOOLKIT_SCROLL_BARS=yes
3256 dnl See if XIM is available.
3257 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
3258 #include <X11/Xlib.h>
3259 #include <X11/Xresource.h>]],
3260 [[XIMProc callback;]])],
3262 AC_DEFINE(HAVE_XIM, 1, [Define to 1 if XIM is available])],
3265 dnl Note this is non-standard. --with-xim does not control whether
3266 dnl XIM support is compiled in, it only affects the runtime default of
3267 dnl use_xim in xterm.c.
3268 if test "${with_xim}" != "no"; then
3269 AC_DEFINE(USE_XIM, 1,
3270 [Define to 1 to default runtime use of XIM to on.])
3274 if test "${HAVE_XIM}" != "no"; then
3276 if test "$GCC" = yes; then
3277 CFLAGS="$CFLAGS --pedantic-errors"
3279 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
3280 #include <X11/Xlib.h>
3281 #include <X11/Xresource.h>]],
3287 XPointer *client_data;
3289 /* If we're not using GCC, it's probably not XFree86, and this is
3290 probably right, but we can't use something like --pedantic-errors. */
3291 extern Bool XRegisterIMInstantiateCallback(Display*, XrmDatabase, char*,
3292 char*, XIMProc, XPointer*);
3294 (void)XRegisterIMInstantiateCallback(display, db, res_name, res_class, callback,
3296 [emacs_cv_arg6_star=yes])
3297 AH_TEMPLATE(XRegisterIMInstantiateCallback_arg6,
3298 [Define to the type of the 6th arg of XRegisterIMInstantiateCallback,
3299 either XPointer or XPointer*.])dnl
3300 if test "$emacs_cv_arg6_star" = yes; then
3301 AC_DEFINE(XRegisterIMInstantiateCallback_arg6, [XPointer*])
3303 AC_DEFINE(XRegisterIMInstantiateCallback_arg6, [XPointer])
3310 if test "${HAVE_X11}" = "yes"; then
3311 AC_CHECK_LIB(Xrender, XRenderQueryExtension, HAVE_XRENDER=yes)
3312 if test $HAVE_XRENDER = yes; then
3313 XRENDER_LIBS="-lXrender"
3314 AC_SUBST(XRENDER_LIBS)
3315 AC_DEFINE([HAVE_XRENDER], 1, [Define to 1 if XRender is available.])
3320 if test "${HAVE_X11}" = "yes"; then
3321 if test "${with_cairo}" != "no"; then
3322 CAIRO_REQUIRED=1.8.0
3323 CAIRO_MODULE="cairo >= $CAIRO_REQUIRED"
3324 EMACS_CHECK_MODULES(CAIRO, $CAIRO_MODULE)
3325 if test $HAVE_CAIRO = yes; then
3326 AC_DEFINE(USE_CAIRO, 1, [Define to 1 if using cairo.])
3328 AC_MSG_ERROR([cairo requested but not found.])
3331 CFLAGS="$CFLAGS $CAIRO_CFLAGS"
3332 LIBS="$LIBS $CAIRO_LIBS"
3333 AC_SUBST(CAIRO_CFLAGS)
3334 AC_SUBST(CAIRO_LIBS)
3338 ### Start of font-backend (under any platform) section.
3339 # (nothing here yet -- this is a placeholder)
3340 ### End of font-backend (under any platform) section.
3342 ### Start of font-backend (under X11) section.
3343 if test "${HAVE_X11}" = "yes"; then
3344 if test $HAVE_CAIRO = yes; then
3345 dnl Strict linkers fail with
3346 dnl ftfont.o: undefined reference to symbol 'FT_New_Face'
3347 dnl if -lfreetype is not specified.
3348 dnl The following is needed to set FREETYPE_LIBS.
3349 EMACS_CHECK_MODULES([FREETYPE], [freetype2])
3351 test "$HAVE_FREETYPE" = "no" && AC_MSG_ERROR(cairo requires libfreetype)
3353 EMACS_CHECK_MODULES([FONTCONFIG], [fontconfig >= 2.2.0])
3355 test "$HAVE_FONTCONFIG" = "no" && AC_MSG_ERROR(cairo requires libfontconfig)
3356 dnl For the "Does Emacs use" message at the end.
3359 ## Use -lXft if available, unless '--with-xft=no'.
3361 if test "x${with_x}" = "xno"; then
3365 if test "$with_xft" != no; then
3366 EMACS_CHECK_MODULES([FONTCONFIG], [fontconfig >= 2.2.0])
3367 with_xft=$HAVE_FONTCONFIG
3370 if test "x${with_xft}" != "xno"; then
3372 EMACS_CHECK_MODULES([XFT], [xft >= 0.13.0], [], [HAVE_XFT=no])
3373 ## Because xterm.c uses XRenderQueryExtension when XFT is
3374 ## enabled, we also need to link to -lXrender.
3375 if test "$HAVE_XFT" != no && test "$HAVE_XRENDER" != no; then
3376 OLD_CPPFLAGS="$CPPFLAGS"
3377 OLD_CFLAGS="$CFLAGS"
3379 CPPFLAGS="$CPPFLAGS $XFT_CFLAGS"
3380 CFLAGS="$CFLAGS $XFT_CFLAGS"
3381 LIBS="$XFT_LIBS $LIBS"
3382 AC_CHECK_HEADER(X11/Xft/Xft.h,
3383 AC_CHECK_LIB(Xft, XftFontOpen, HAVE_XFT=yes, , $XFT_LIBS) , ,
3384 [[#include <X11/X.h>]])
3386 if test "${HAVE_XFT}" = "yes"; then
3387 AC_DEFINE(HAVE_XFT, 1, [Define to 1 if you have the Xft library.])
3389 C_SWITCH_X_SITE="$C_SWITCH_X_SITE $XFT_CFLAGS"
3390 fi # "${HAVE_XFT}" = "yes"
3391 CPPFLAGS=$OLD_CPPFLAGS
3395 # Make sure XFT is disabled if we found XFT but not XRender
3397 fi # "$HAVE_XFT" != no
3398 fi # "x${with_xft}" != "xno"
3400 ## We used to allow building with FreeType and without Xft.
3401 ## However, the ftx font backend driver is not in good shape.
3402 if test "$HAVE_XFT" != "yes"; then
3403 dnl For the "Does Emacs use" message at the end.
3407 dnl Strict linkers fail with
3408 dnl ftfont.o: undefined reference to symbol 'FT_New_Face'
3409 dnl if -lfreetype is not specified.
3410 dnl The following is needed to set FREETYPE_LIBS.
3411 EMACS_CHECK_MODULES([FREETYPE], [freetype2])
3413 test "$HAVE_FREETYPE" = "no" && AC_MSG_ERROR(libxft requires libfreetype)
3415 fi # $HAVE_CAIRO != yes
3418 if test "${HAVE_FREETYPE}" = "yes"; then
3419 AC_DEFINE(HAVE_FREETYPE, 1,
3420 [Define to 1 if using the freetype and fontconfig libraries.])
3423 CFLAGS="$CFLAGS $FREETYPE_CFLAGS"
3424 LIBS="$FREETYPE_LIBS $LIBS"
3425 AC_CHECK_FUNCS(FT_Face_GetCharVariantIndex)
3428 if test "${with_libotf}" != "no"; then
3429 EMACS_CHECK_MODULES([LIBOTF], [libotf])
3430 if test "$HAVE_LIBOTF" = "yes"; then
3431 AC_DEFINE(HAVE_LIBOTF, 1, [Define to 1 if using libotf.])
3432 AC_CHECK_LIB(otf, OTF_get_variation_glyphs,
3433 HAVE_OTF_GET_VARIATION_GLYPHS=yes,
3434 HAVE_OTF_GET_VARIATION_GLYPHS=no)
3435 if test "${HAVE_OTF_GET_VARIATION_GLYPHS}" = "yes"; then
3436 AC_DEFINE(HAVE_OTF_GET_VARIATION_GLYPHS, 1,
3437 [Define to 1 if libotf has OTF_get_variation_glyphs.])
3439 if ! $PKG_CONFIG --atleast-version=0.9.16 libotf; then
3440 AC_DEFINE(HAVE_OTF_KANNADA_BUG, 1,
3441 [Define to 1 if libotf is affected by https://debbugs.gnu.org/28110.])
3445 dnl FIXME should there be an error if HAVE_FREETYPE != yes?
3446 dnl Does the new font backend require it, or can it work without it?
3450 if test "${HAVE_LIBOTF}" = yes; then
3451 if test "${with_m17n_flt}" != "no"; then
3452 EMACS_CHECK_MODULES([M17N_FLT], [m17n-flt])
3453 if test "$HAVE_M17N_FLT" = "yes"; then
3454 AC_DEFINE(HAVE_M17N_FLT, 1, [Define to 1 if using libm17n-flt.])
3458 else # "${HAVE_X11}" != "yes"
3463 fi # "${HAVE_X11}" != "yes"
3466 if test "${HAVE_X11}" = "yes" && test "${HAVE_FREETYPE}" = "yes" \
3467 || test "${HAVE_W32}" = "yes"; then
3468 if test "${with_harfbuzz}" != "no"; then
3469 ### On MS-Windows we use hb_font_get_nominal_glyph, which appeared
3470 ### in HarfBuzz version 1.2.3
3471 if test "${HAVE_W32}" = "yes"; then
3472 EMACS_CHECK_MODULES([HARFBUZZ], [harfbuzz >= 1.2.3])
3474 EMACS_CHECK_MODULES([HARFBUZZ], [harfbuzz >= 0.9.42])
3476 if test "$HAVE_HARFBUZZ" = "yes"; then
3477 AC_DEFINE(HAVE_HARFBUZZ, 1, [Define to 1 if using HarfBuzz.])
3478 ### mingw32 and Cygwin-w32 don't use -lharfbuzz, since they load
3479 ### the library dynamically.
3480 if test "${HAVE_W32}" = "yes"; then
3487 ### End of font-backend section.
3489 AC_SUBST(FREETYPE_CFLAGS)
3490 AC_SUBST(FREETYPE_LIBS)
3491 AC_SUBST(FONTCONFIG_CFLAGS)
3492 AC_SUBST(FONTCONFIG_LIBS)
3493 AC_SUBST(HARFBUZZ_CFLAGS)
3494 AC_SUBST(HARFBUZZ_LIBS)
3495 AC_SUBST(LIBOTF_CFLAGS)
3496 AC_SUBST(LIBOTF_LIBS)
3497 AC_SUBST(M17N_FLT_CFLAGS)
3498 AC_SUBST(M17N_FLT_LIBS)
3500 if test "${HAVE_X11}" = "yes"; then
3501 AC_CHECK_HEADER(X11/Xlib-xcb.h,
3502 AC_CHECK_LIB(xcb, xcb_translate_coordinates, HAVE_XCB=yes))
3503 if test "${HAVE_XCB}" = "yes"; then
3504 AC_CHECK_LIB(X11-xcb, XGetXCBConnection, HAVE_X11_XCB=yes)
3505 if test "${HAVE_X11_XCB}" = "yes"; then
3506 AC_DEFINE(USE_XCB, 1,
3507 [Define to 1 if you have the XCB library and X11-XCB library for mixed
3508 X11/XCB programming.])
3509 XCB_LIBS="-lX11-xcb -lxcb"
3515 ### Use -lXpm if available, unless '--with-xpm=no'.
3516 ### mingw32 doesn't use -lXpm, since it loads the library dynamically.
3517 ### The Cygwin-w32 build uses <noX/xpm.h> instead of <X11/xpm.h>, so
3518 ### we need to set LDFLAGS accordingly.
3521 if test "${HAVE_W32}" = "yes" && test "${opsys}" = "cygwin"; then
3522 if test "${with_xpm}" != "no"; then
3523 SAVE_LDFLAGS="$LDFLAGS"
3524 LDFLAGS="$LDFLAGS -L/usr/lib/noX"
3525 AC_CHECK_HEADER(noX/xpm.h,
3526 [AC_CHECK_LIB(Xpm, XpmReadFileToImage, HAVE_XPM=yes)])
3527 if test "${HAVE_XPM}" = "yes"; then
3528 AC_CACHE_CHECK([for XpmReturnAllocPixels preprocessor define],
3529 [emacs_cv_cpp_xpm_return_alloc_pixels],
3530 [AC_EGREP_CPP(no_return_alloc_pixels,
3531 [#include "noX/xpm.h"
3532 #ifndef XpmReturnAllocPixels
3533 no_return_alloc_pixels
3535 ], emacs_cv_cpp_xpm_return_alloc_pixels=no,
3536 emacs_cv_cpp_xpm_return_alloc_pixels=yes)])
3538 if test "$emacs_cv_cpp_xpm_return_alloc_pixels" = "no"; then
3540 LDFLAGS="$SAVE_LDFLAGS"
3545 if test "${HAVE_XPM}" = "yes"; then
3546 AC_DEFINE(HAVE_XPM, 1, [Define to 1 if you have the Xpm library (-lXpm).])
3551 if test "${HAVE_X11}" = "yes"; then
3552 dnl Avoid Xpm on AIX unless requested, as it crashes; see Bug#17598.
3553 case $opsys,$with_xpm_set,$with_xpm in
3555 aix4-2,*) with_xpm=no;;
3558 if test "${with_xpm}" != "no"; then
3559 AC_CHECK_HEADER(X11/xpm.h,
3560 [AC_CHECK_LIB(Xpm, XpmReadFileToPixmap, HAVE_XPM=yes, , -lX11)])
3561 if test "${HAVE_XPM}" = "yes"; then
3562 AC_CACHE_CHECK([for XpmReturnAllocPixels preprocessor define],
3563 [emacs_cv_cpp_xpm_return_alloc_pixels],
3564 [AC_EGREP_CPP(no_return_alloc_pixels,
3565 [#include "X11/xpm.h"
3566 #ifndef XpmReturnAllocPixels
3567 no_return_alloc_pixels
3569 ], emacs_cv_cpp_xpm_return_alloc_pixels=no,
3570 emacs_cv_cpp_xpm_return_alloc_pixels=yes)])
3572 if test "$emacs_cv_cpp_xpm_return_alloc_pixels" = "no"; then
3578 if test "${HAVE_XPM}" = "yes"; then
3579 AC_DEFINE(HAVE_XPM, 1, [Define to 1 if you have the Xpm library (-lXpm).])
3581 elif test "$opsys,$LUCID_LIBW" = aix4-2,-lXaw; then
3582 dnl AIX -lXaw needs -lXpm linked too; see Bug#17598 Message#152.
3587 ### FIXME: Perhaps regroup to minimize code duplication due to MinGW's
3588 ### slightly different requirements wrt image libraries (it doesn't
3589 ### use -lXpm because it loads the xpm shared library dynamically at
3591 if test "${opsys}" = "mingw32"; then
3592 if test "${with_xpm}" != "no"; then
3593 AC_CHECK_HEADER(X11/xpm.h, HAVE_XPM=yes, HAVE_XPM=no, [
3597 if test "${HAVE_XPM}" = "yes"; then
3598 AC_DEFINE(HAVE_XPM, 1, [Define to 1 if you have the Xpm library (-lXpm).])
3604 ### Use -ljpeg if available, unless '--with-jpeg=no'.
3607 if test "${NS_IMPL_COCOA}" = yes; then
3608 : # Cocoa provides its own jpeg support, so do nothing.
3609 elif test "${with_jpeg}" != "no"; then
3610 AC_CACHE_CHECK([for jpeglib 6b or later],
3613 for emacs_cv_jpeglib in yes -ljpeg no; do
3614 case $emacs_cv_jpeglib in
3617 *) LIBS="$LIBS $emacs_cv_jpeglib";;
3621 [[#undef HAVE_STDLIB_H /* Avoid config.h/jpeglib.h collision. */
3622 #include <stdio.h> /* jpeglib.h needs FILE and size_t. */
3623 #include <jpeglib.h>
3625 char verify[JPEG_LIB_VERSION < 62 ? -1 : 1];
3626 struct jpeg_decompress_struct cinfo;
3629 jpeg_create_decompress (&cinfo);
3630 WARNMS (&cinfo, JWRN_JPEG_EOF);
3631 jpeg_destroy_decompress (&cinfo);
3633 [emacs_link_ok=yes],
3636 test $emacs_link_ok = yes && break
3638 if test "$emacs_cv_jpeglib" != no; then
3640 AC_DEFINE([HAVE_JPEG], 1,
3641 [Define to 1 if you have the jpeg library (typically -ljpeg).])
3642 ### mingw32 doesn't use -ljpeg, since it loads the library
3643 ### dynamically when needed, and doesn't want a run-time
3644 ### dependency on the jpeglib DLL.
3645 test "$emacs_cv_jpeglib" != yes && test "${opsys}" != "mingw32" \
3646 && LIBJPEG=$emacs_cv_jpeglib
3654 if test "${with_lcms2}" != "no"; then
3655 EMACS_CHECK_MODULES([LCMS2], [lcms2])
3657 if test "${HAVE_LCMS2}" = "yes"; then
3658 AC_DEFINE([HAVE_LCMS2], 1, [Define to 1 if you have the lcms2 library (-llcms2).])
3659 ### mingw32 doesn't use -llcms2, since it loads the library dynamically.
3660 if test "${opsys}" = "mingw32"; then
3664 AC_SUBST(LCMS2_CFLAGS)
3665 AC_SUBST(LCMS2_LIBS)
3669 if test "${with_zlib}" != "no"; then
3671 AC_SEARCH_LIBS([inflateEnd], [z], [HAVE_ZLIB=yes])
3673 case $ac_cv_search_inflateEnd in
3674 -*) LIBZ=$ac_cv_search_inflateEnd ;;
3677 if test "${HAVE_ZLIB}" = "yes"; then
3678 AC_DEFINE([HAVE_ZLIB], 1, [Define to 1 if you have the zlib library (-lz).])
3679 ### mingw32 doesn't use -lz, since it loads the library dynamically.
3680 if test "${opsys}" = "mingw32"; then
3686 ### Dynamic modules support
3691 cygwin|mingw32) MODULES_SUFFIX=".dll" ;;
3692 *) MODULES_SUFFIX=".so" ;;
3694 if test "${with_modules}" != "no"; then
3700 cygwin|mingw32|darwin)
3704 # BSD systems have dlopen in libc.
3705 AC_CHECK_FUNC([dlopen], [HAVE_MODULES=yes])
3709 if test "${HAVE_MODULES}" = no; then
3710 AC_MSG_ERROR([Dynamic modules are not supported on your system])
3713 LIBS="$LIBS $LIBMODULES"
3714 AC_CHECK_FUNCS([dladdr dlfunc])
3719 if test "${HAVE_MODULES}" = yes; then
3720 MODULES_OBJ="dynlib.o emacs-module.o"
3721 AC_DEFINE(HAVE_MODULES, 1, [Define to 1 if dynamic modules are enabled])
3722 AC_DEFINE_UNQUOTED(MODULES_SUFFIX, "$MODULES_SUFFIX",
3723 [System extension for dynamic libraries])
3725 AC_SUBST(MODULES_OBJ)
3726 AC_SUBST(LIBMODULES)
3727 AC_SUBST(HAVE_MODULES)
3728 AC_SUBST(MODULES_SUFFIX)
3730 AC_CONFIG_FILES([src/emacs-module.h])
3731 AC_SUBST_FILE([module_env_snippet_25])
3732 AC_SUBST_FILE([module_env_snippet_26])
3733 AC_SUBST_FILE([module_env_snippet_27])
3734 module_env_snippet_25="$srcdir/src/module-env-25.h"
3735 module_env_snippet_26="$srcdir/src/module-env-26.h"
3736 module_env_snippet_27="$srcdir/src/module-env-27.h"
3737 emacs_major_version="${PACKAGE_VERSION%%.*}"
3738 AC_SUBST(emacs_major_version)
3740 ### Use -lpng if available, unless '--with-png=no'.
3744 if test "${NS_IMPL_COCOA}" = yes; then
3745 : # Cocoa provides its own png support, so do nothing.
3746 elif test "${with_png}" != no; then
3747 # mingw32 loads the library dynamically.
3748 if test "$opsys" = mingw32; then
3749 AC_CHECK_HEADER([png.h], [HAVE_PNG=yes])
3750 elif test "${HAVE_X11}" = "yes" || test "${HAVE_W32}" = "yes"; then
3751 EMACS_CHECK_MODULES([PNG], [libpng >= 1.0.0])
3752 if test $HAVE_PNG = yes; then
3755 # Test old way in case pkg-config doesn't have it (older machines).
3756 AC_MSG_CHECKING([for libpng not configured by pkg-config])
3758 png_cflags=`(libpng-config --cflags) 2>&AS_MESSAGE_LOG_FD` &&
3759 png_ldflags=`(libpng-config --ldflags) 2>&AS_MESSAGE_LOG_FD` || {
3760 # libpng-config does not work; configure by hand.
3761 # Debian unstable as of July 2003 has multiple libpngs, and puts png.h
3762 # in /usr/include/libpng.
3763 if test -r /usr/include/libpng/png.h &&
3764 test ! -r /usr/include/png.h; then
3765 png_cflags=-I/usr/include/libpng
3773 CFLAGS="$CFLAGS $png_cflags"
3774 LIBS="$png_ldflags -lz -lm $LIBS"
3776 [AC_LANG_PROGRAM([[#include <png.h>]],
3777 [[return !png_get_channels (0, 0);]])],
3779 PNG_CFLAGS=`AS_ECHO(["$png_cflags"]) | sed -e "$edit_cflags"`
3780 LIBPNG=$png_ldflags])
3783 AC_MSG_RESULT([$HAVE_PNG])
3786 # $LIBPNG requires explicit -lz in some cases.
3787 # We don't know what those cases are, exactly, so play it safe and
3788 # append -lz to any nonempty $LIBPNG, unless we're already using LIBZ.
3789 case " $LIBPNG ",$LIBZ in
3790 *' -lz '*, | *' ',?*) ;;
3791 *) LIBPNG="$LIBPNG -lz" ;;
3795 if test $HAVE_PNG = yes; then
3796 AC_DEFINE([HAVE_PNG], [1], [Define to 1 if you have the png library.])
3799 CFLAGS="$CFLAGS $PNG_CFLAGS"
3800 AC_CHECK_DECL([png_longjmp],
3802 [AC_DEFINE([PNG_DEPSTRUCT], [],
3803 [Define to empty to suppress deprecation warnings when building
3804 with --enable-gcc-warnings and with libpng versions before 1.5,
3805 which lack png_longjmp.])],
3811 AC_SUBST(PNG_CFLAGS)
3813 ### Use -ltiff if available, unless '--with-tiff=no'.
3814 ### mingw32 doesn't use -ltiff, since it loads the library dynamically.
3817 if test "${opsys}" = "mingw32"; then
3818 if test "${with_tiff}" != "no"; then
3819 AC_CHECK_HEADER(tiffio.h, HAVE_TIFF=yes, HAVE_TIFF=no)
3821 if test "${HAVE_TIFF}" = "yes"; then
3822 AC_DEFINE(HAVE_TIFF, 1, [Define to 1 if you have the tiff library (-ltiff).])
3824 elif test "${HAVE_X11}" = "yes" || test "${HAVE_W32}" = "yes"; then
3825 if test "${with_tiff}" != "no"; then
3826 AC_CHECK_HEADER(tiffio.h,
3828 # At least one tiff package requires the jpeg library.
3829 if test "${HAVE_JPEG}" = yes; then tifflibs="-ljpeg $tifflibs"; fi
3830 AC_CHECK_LIB(tiff, TIFFGetVersion, HAVE_TIFF=yes, , $tifflibs)])
3833 if test "${HAVE_TIFF}" = "yes"; then
3834 AC_DEFINE(HAVE_TIFF, 1, [Define to 1 if you have the tiff library (-ltiff).])
3835 dnl FIXME -lz -lm, as per libpng?
3841 ### Use -lgif or -lungif if available, unless '--with-gif=no'.
3842 ### mingw32 doesn't use -lgif/-lungif, since it loads the library dynamically.
3845 if test "${opsys}" = "mingw32"; then
3846 if test "${with_gif}" != "no"; then
3847 AC_CHECK_HEADER(gif_lib.h, HAVE_GIF=yes, HAVE_GIF=no)
3849 if test "${HAVE_GIF}" = "yes"; then
3850 AC_DEFINE(HAVE_GIF, 1, [Define to 1 if you have a gif (or ungif) library.])
3852 elif test "${HAVE_X11}" = "yes" && test "${with_gif}" != "no" \
3853 || test "${HAVE_W32}" = "yes"; then
3854 AC_CHECK_HEADER(gif_lib.h,
3855 # EGifPutExtensionLast only exists from version libungif-4.1.0b1.
3856 # Earlier versions can crash Emacs, but version 5.0 removes EGifPutExtensionLast.
3857 [AC_CHECK_LIB(gif, GifMakeMapObject, HAVE_GIF=yes,
3858 [AC_CHECK_LIB(gif, EGifPutExtensionLast, HAVE_GIF=yes, HAVE_GIF=maybe)])])
3860 if test "$HAVE_GIF" = yes; then
3862 elif test "$HAVE_GIF" = maybe; then
3863 # If gif_lib.h but no libgif, try libungif.
3864 AC_CHECK_LIB(ungif, EGifPutExtensionLast, HAVE_GIF=yes, HAVE_GIF=no)
3865 test "$HAVE_GIF" = yes && LIBGIF=-lungif
3868 if test "${HAVE_GIF}" = "yes"; then
3869 AC_DEFINE(HAVE_GIF, 1, [Define to 1 if you have a gif (or ungif) library.])
3874 dnl Check for required libraries.
3877 if test "${HAVE_X11}" = "yes"; then
3878 case $with_xpm,$HAVE_XPM in
3879 no,* | ifavailable,* | *,yes) ;;
3881 WITH_IFAVAILABLE="--with-xpm=ifavailable";;
3883 case $with_jpeg,$HAVE_JPEG in
3884 no,* | ifavailable,* | *,yes) ;;
3885 *) MISSING="$MISSING libjpeg"
3886 WITH_IFAVAILABLE="$WITH_IFAVAILABLE --with-jpeg=ifavailable";;
3888 case $with_png,$HAVE_PNG in
3889 no,* | ifavailable,* | *,yes) ;;
3890 *) MISSING="$MISSING libpng"
3891 WITH_IFAVAILABLE="$WITH_IFAVAILABLE --with-png=ifavailable";;
3893 case $with_gif,$HAVE_GIF in
3894 no,* | ifavailable,* | *,yes) ;;
3895 *) MISSING="$MISSING libgif/libungif"
3896 WITH_IFAVAILABLE="$WITH_IFAVAILABLE --with-gif=ifavailable";;
3898 case $with_tiff,$HAVE_TIFF in
3899 no,* | ifavailable,* | *,yes) ;;
3900 *) MISSING="$MISSING libtiff"
3901 WITH_IFAVAILABLE="$WITH_IFAVAILABLE --with-tiff=ifavailable";;
3904 case $with_gnutls,$HAVE_GNUTLS in
3905 no,* | ifavailable,* | *,yes) ;;
3906 *) MISSING="$MISSING gnutls"
3907 WITH_IFAVAILABLE="$WITH_IFAVAILABLE --with-gnutls=ifavailable";;
3909 if test "X${MISSING}" != X; then
3910 AC_MSG_ERROR([The following required libraries were not found:
3912 Maybe some development libraries/packages are missing?
3913 To build anyway, give:
3915 as options to configure.])
3918 ### Use -lgpm if available, unless '--with-gpm=no'.
3921 if test "${with_gpm}" != "no"; then
3922 AC_CHECK_HEADER(gpm.h,
3923 [AC_CHECK_LIB(gpm, Gpm_Open, HAVE_GPM=yes)])
3925 if test "${HAVE_GPM}" = "yes"; then
3926 AC_DEFINE(HAVE_GPM, 1, [Define to 1 if you have the gpm library (-lgpm).])
3932 dnl Check for malloc/malloc.h on darwin
3933 AC_CHECK_HEADERS_ONCE(malloc/malloc.h)
3936 ### Use NeXTstep API to implement GUI.
3937 if test "${HAVE_NS}" = "yes"; then
3938 AC_DEFINE(HAVE_NS, 1, [Define to 1 if you are using the NeXTstep API, either GNUstep or Cocoa on macOS.])
3939 if test "${NS_IMPL_COCOA}" = "yes"; then
3940 AC_DEFINE(NS_IMPL_COCOA, 1, [Define to 1 if you are using NS windowing under macOS.])
3942 if test "${NS_IMPL_GNUSTEP}" = "yes"; then
3943 AC_DEFINE(NS_IMPL_GNUSTEP, 1, [Define to 1 if you are using NS windowing under GNUstep.])
3944 if test $NS_GNUSTEP_CONFIG != yes; then
3945 # See also .m.o rule in src/Makefile.in. */
3946 # FIXME: are all these flags really needed? Document here why. */
3947 GNUSTEP_CFLAGS="-D_REENTRANT -fPIC -fno-strict-aliasing -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
3948 ## Extra CFLAGS applied to src/*.m files.
3949 GNU_OBJC_CFLAGS="$GNU_OBJC_CFLAGS -fgnu-runtime -Wno-import -fconstant-string-class=NSConstantString -DGNUSTEP_BASE_LIBRARY=1 -DGNU_GUI_LIBRARY=1 -DGNU_RUNTIME=1 -DGSWARN -DGSDIAGNOSE"
3955 ### Use session management (-lSM -lICE) if available
3958 if test "${HAVE_X11}" = "yes"; then
3959 AC_CHECK_HEADER(X11/SM/SMlib.h,
3960 [AC_CHECK_LIB(SM, SmcOpenConnection, HAVE_X_SM=yes, , -lICE)])
3962 if test "${HAVE_X_SM}" = "yes"; then
3963 AC_DEFINE(HAVE_X_SM, 1, [Define to 1 if you have the SM library (-lSM).])
3969 ### Use XRandr (-lXrandr) if available
3971 if test "${HAVE_X11}" = "yes"; then
3972 XRANDR_REQUIRED=1.2.2
3973 XRANDR_MODULES="xrandr >= $XRANDR_REQUIRED"
3974 EMACS_CHECK_MODULES([XRANDR], [$XRANDR_MODULES])
3975 if test $HAVE_XRANDR = no; then
3976 # Test old way in case pkg-config doesn't have it (older machines).
3977 # Include Xrender.h by hand to work around bug in older Xrandr.h
3978 # (e.g. RHEL5) and silence (harmless) configure warning (bug#18465).
3979 AC_CHECK_HEADER(X11/extensions/Xrandr.h,
3980 [AC_CHECK_LIB(Xrandr, XRRGetScreenResources, HAVE_XRANDR=yes)],
3981 [], [AC_INCLUDES_DEFAULT
3982 #include <X11/extensions/Xrender.h>])
3983 if test $HAVE_XRANDR = yes; then
3984 XRANDR_LIBS=-lXrandr
3987 if test $HAVE_XRANDR = yes; then
3988 AC_DEFINE(HAVE_XRANDR, 1, [Define to 1 if you have the XRandr extension.])
3991 AC_SUBST(XRANDR_CFLAGS)
3992 AC_SUBST(XRANDR_LIBS)
3994 ### Use Xinerama (-lXinerama) if available
3996 if test "${HAVE_X11}" = "yes"; then
3997 XINERAMA_REQUIRED=1.0.2
3998 XINERAMA_MODULES="xinerama >= $XINERAMA_REQUIRED"
3999 EMACS_CHECK_MODULES([XINERAMA], [$XINERAMA_MODULES])
4000 if test $HAVE_XINERAMA = no; then
4001 # Test old way in case pkg-config doesn't have it (older machines).
4002 AC_CHECK_HEADER(X11/extensions/Xinerama.h,
4003 [AC_CHECK_LIB(Xinerama, XineramaQueryExtension, HAVE_XINERAMA=yes)])
4004 if test $HAVE_XINERAMA = yes; then
4005 XINERAMA_LIBS=-lXinerama
4008 if test $HAVE_XINERAMA = yes; then
4009 AC_DEFINE(HAVE_XINERAMA, 1, [Define to 1 if you have the Xinerama extension.])
4012 AC_SUBST(XINERAMA_CFLAGS)
4013 AC_SUBST(XINERAMA_LIBS)
4015 ### Use Xfixes (-lXfixes) if available
4017 if test "${HAVE_X11}" = "yes"; then
4018 XFIXES_REQUIRED=4.0.0
4019 XFIXES_MODULES="xfixes >= $XFIXES_REQUIRED"
4020 EMACS_CHECK_MODULES([XFIXES], [$XFIXES_MODULES])
4021 if test $HAVE_XFIXES = no; then
4022 # Test old way in case pkg-config doesn't have it (older machines).
4023 AC_CHECK_HEADER(X11/extensions/Xfixes.h,
4024 [AC_CHECK_LIB(Xfixes, XFixesHideCursor, HAVE_XFIXES=yes)])
4025 if test $HAVE_XFIXES = yes; then
4026 XFIXES_LIBS=-lXfixes
4029 if test $HAVE_XFIXES = yes; then
4030 AC_DEFINE(HAVE_XFIXES, 1, [Define to 1 if you have the Xfixes extension.])
4033 AC_SUBST(XFIXES_CFLAGS)
4034 AC_SUBST(XFIXES_LIBS)
4036 ### Use Xdbe (-lXdbe) if available
4038 if test "${HAVE_X11}" = "yes"; then
4039 AC_CHECK_HEADER(X11/extensions/Xdbe.h,
4040 [AC_CHECK_LIB(Xext, XdbeAllocateBackBufferName, HAVE_XDBE=yes)],
4042 [#include <X11/Xlib.h>
4044 if test $HAVE_XDBE = yes; then
4047 if test $HAVE_XDBE = yes; then
4048 AC_DEFINE(HAVE_XDBE, 1, [Define to 1 if you have the Xdbe extension.])
4051 AC_SUBST(XDBE_CFLAGS)
4054 ### Use libxml (-lxml2) if available
4055 ### mingw32 doesn't use -lxml2, since it loads the library dynamically.
4057 if test "${with_xml2}" != "no"; then
4058 ### I'm not sure what the version number should be, so I just guessed.
4059 EMACS_CHECK_MODULES([LIBXML2], [libxml-2.0 > 2.6.17])
4060 # Built-in libxml2 on OS X 10.8 lacks libxml-2.0.pc.
4061 if test "${HAVE_LIBXML2}" != "yes" && test "$opsys" = "darwin"; then
4062 SAVE_CPPFLAGS="$CPPFLAGS"
4063 if test -z "$xcsdkdir" -a -n "$XCRUN" -a ! -d /usr/include; then
4064 dnl /usr/include is not found. Try Xcode SDK dir if it is sane.
4065 xcsdkdir=`$XCRUN --show-sdk-path 2>/dev/null`
4067 *[[\\\"\#\$\&\'\`$am_lf\ \ ]]*)
4071 CPPFLAGS="$CPPFLAGS -isystem${xcsdkdir}/usr/include/libxml2"
4072 AC_CHECK_HEADER(libxml/HTMLparser.h,
4073 [AC_CHECK_DECL(HTML_PARSE_RECOVER, HAVE_LIBXML2=yes, ,
4074 [#include <libxml/HTMLparser.h>])])
4075 CPPFLAGS="$SAVE_CPPFLAGS"
4076 if test "${HAVE_LIBXML2}" = "yes"; then
4077 LIBXML2_CFLAGS="-isystem${xcsdkdir}/usr/include/libxml2"
4078 LIBXML2_LIBS="-lxml2"
4081 if test "${HAVE_LIBXML2}" = "yes"; then
4082 if test "${opsys}" != "mingw32"; then
4083 AC_CHECK_LIB(xml2, htmlReadMemory, HAVE_LIBXML2=yes, HAVE_LIBXML2=no,
4088 if test "${HAVE_LIBXML2}" = "yes"; then
4089 AC_DEFINE(HAVE_LIBXML2, 1, [Define to 1 if you have the libxml library (-lxml2).])
4096 AC_SUBST(LIBXML2_LIBS)
4097 AC_SUBST(LIBXML2_CFLAGS)
4101 if test ! "$with_mailutils"; then
4102 # Check for mail-locking functions in a "mail" library. Probably this should
4103 # have the same check as for liblockfile below.
4104 AC_CHECK_LIB([mail], [maillock], [have_mail=yes], [have_mail=no])
4105 if test $have_mail = yes; then
4107 AC_DEFINE([HAVE_LIBMAIL], [1],
4108 [Define to 1 if you have the 'mail' library (-lmail).])
4111 LIBS="$LIBS_MAIL $LIBS"
4112 AC_CHECK_FUNCS([touchlock])
4115 dnl Debian, at least:
4116 AC_CHECK_LIB([lockfile], [maillock], [have_lockfile=yes], [have_lockfile=no])
4117 if test $have_lockfile = yes; then
4118 LIBS_MAIL=-llockfile
4119 AC_DEFINE([HAVE_LIBLOCKFILE], [1],
4120 [Define to 1 if you have the 'lockfile' library (-llockfile).])
4122 # If we have the shared liblockfile, assume we must use it for mail
4123 # locking (e.g. Debian). If we couldn't link against liblockfile
4124 # (no liblockfile.a installed), ensure that we don't need to.
4125 dnl This works for files generally, not just executables.
4126 dnl Should we look elsewhere for it? Maybe examine /etc/ld.so.conf?
4127 AC_CHECK_PROG([liblockfile], [liblockfile.so], [yes], [no],
4128 [/usr/lib:/lib:/usr/local/lib:$LD_LIBRARY_PATH])
4129 if test "$ac_cv_prog_liblockfile" = yes; then
4130 AC_MSG_ERROR([Shared liblockfile found but can't link against it.
4131 This probably means that movemail could lose mail.
4132 There may be a 'development' package to install containing liblockfile.])
4135 AC_CHECK_HEADERS([maillock.h])
4137 ## Define MAIL_USE_FLOCK (or LOCKF) if the mailer uses flock (or lockf) to
4138 ## interlock access to the mail spool. The alternative is a lock file named
4139 ## /usr/spool/mail/$USER.lock.
4142 aix4-2) mail_lock="lockf" ;;
4144 gnu|freebsd|dragonfly|netbsd|openbsd|darwin) mail_lock="flock" ;;
4146 ## On GNU/Linux systems, both methods are used by various mail programs.
4147 ## I assume most people are using newer mailers that have heard of flock.
4148 ## Change this if you need to.
4149 ## Debian contains a patch which says: "On Debian/GNU/Linux systems,
4150 ## configure gets the right answers, and that means *NOT* using flock.
4151 ## Using flock is guaranteed to be the wrong thing. See Debian Policy
4152 ## for details." and then uses '#ifdef DEBIAN'. Unfortunately the
4153 ## Debian maintainer hasn't provided a clean fix for Emacs.
4154 ## movemail.c will use 'maillock' when MAILDIR, HAVE_LIBMAIL and
4155 ## HAVE_MAILLOCK_H are defined, so the following appears to be the
4156 ## correct logic. -- fx
4157 ## We must check for HAVE_LIBLOCKFILE too, as movemail does.
4158 ## liblockfile is a Free Software replacement for libmail, used on
4159 ## Debian systems and elsewhere. -rfr.
4162 if test $have_mail = yes || test $have_lockfile = yes; then
4163 test $ac_cv_header_maillock_h = yes && mail_lock=no
4167 mail_lock="none-needed" ;;
4171 flock) AC_DEFINE([MAIL_USE_FLOCK], [1],
4172 [Define if the mailer uses flock to interlock the mail spool.]);;
4174 lockf) AC_DEFINE([MAIL_USE_LOCKF], [1],
4175 [Define if the mailer uses lockf to interlock the mail spool.]);;
4179 *) BLESSMAIL_TARGET="need-blessmail" ;;
4182 AC_SUBST([BLESSMAIL_TARGET])
4183 AC_SUBST([LIBS_MAIL])
4186 LIBS="$LIB_PTHREAD $LIB_MATH $LIBS"
4187 AC_CHECK_FUNCS(accept4 fchdir gethostname \
4188 getrusage get_current_dir_name \
4189 lrand48 random rint trunc \
4190 select getpagesize setlocale newlocale \
4191 getrlimit setrlimit shutdown \
4192 pthread_sigmask strsignal setitimer timer_getoverrun \
4193 sendto recvfrom getsockname getifaddrs freeifaddrs \
4195 getpwent endpwent getgrent endgrent \
4196 cfmakeraw cfsetspeed __executable_start log2 prctl)
4199 dnl No need to check for posix_memalign if aligned_alloc works.
4200 AC_CHECK_FUNCS([aligned_alloc posix_memalign], [break])
4201 AC_CHECK_DECLS([aligned_alloc], [], [], [[#include <stdlib.h>]])
4204 AC_CHECK_FUNCS([posix_madvise])
4206 dnl Cannot use AC_CHECK_FUNCS
4207 AC_CACHE_CHECK([for __builtin_frame_address],
4208 [emacs_cv_func___builtin_frame_address],
4209 [AC_LINK_IFELSE([AC_LANG_PROGRAM([], [__builtin_frame_address (0);])],
4210 [emacs_cv_func___builtin_frame_address=yes],
4211 [emacs_cv_func___builtin_frame_address=no])])
4212 if test $emacs_cv_func___builtin_frame_address = yes; then
4213 AC_DEFINE([HAVE___BUILTIN_FRAME_ADDRESS], 1,
4214 [Define to 1 if you have the '__builtin_frame_address' function.])
4216 AC_CACHE_CHECK([for __builtin_unwind_init],
4217 emacs_cv_func___builtin_unwind_init,
4218 [AC_LINK_IFELSE([AC_LANG_PROGRAM([], [__builtin_unwind_init ();])],
4219 emacs_cv_func___builtin_unwind_init=yes,
4220 emacs_cv_func___builtin_unwind_init=no)])
4221 if test $emacs_cv_func___builtin_unwind_init = yes; then
4222 AC_DEFINE(HAVE___BUILTIN_UNWIND_INIT, 1,
4223 [Define to 1 if you have the '__builtin_unwind_init' function.])
4226 AC_CHECK_HEADERS_ONCE(sys/un.h)
4231 AC_CHECK_FUNCS(grantpt)
4233 # PTY-related GNU extensions.
4234 AC_CHECK_FUNCS(getpt posix_openpt)
4236 dnl Run a test program that contains a call to tputs, a call that is
4237 dnl never executed. This tests whether a pre-'main' dynamic linker
4238 dnl works with the library. It's too much trouble to actually call
4239 dnl tputs in the test program, due to portability hassles. When
4240 dnl cross-compiling, assume the test program will run if it links.
4241 AC_DEFUN([tputs_link_source], [
4243 [[extern void tputs (const char *, int, int (*)(int));
4244 int main (int argc, char **argv)
4247 tputs (argv[0], 0, 0);
4251 # Check this now, so that we will NOT find the above functions in ncurses.
4252 # That is because we have not set up to link ncurses in lib-src.
4253 # It's better to believe a function is not available
4254 # than to expect to find it in ncurses.
4255 # Also we need tputs and friends to be able to build at all.
4256 AC_CACHE_CHECK([for library containing tputs], [emacs_cv_tputs_lib],
4257 [if test "${opsys}" = "mingw32"; then
4258 emacs_cv_tputs_lib='none required'
4260 # curses precedes termcap because of AIX (Bug#9736#35) and OpenIndiana.
4261 tputs_libraries='tinfo ncurses terminfo curses termcap tinfow ncursesw'
4262 for tputs_library in '' $tputs_libraries; do
4264 if test -z "$tputs_library"; then
4265 emacs_cv_tputs_lib='none required'
4267 emacs_cv_tputs_lib=-l$tputs_library
4268 LIBS="$emacs_cv_tputs_lib $LIBS"
4270 AC_RUN_IFELSE([tputs_link_source], [], [emacs_cv_tputs_lib=no],
4271 [AC_LINK_IFELSE([tputs_link_source], [], [emacs_cv_tputs_lib=no])])
4273 if test "X$emacs_cv_tputs_lib" != Xno; then
4278 AS_CASE(["$emacs_cv_tputs_lib"],
4279 [no], [AC_MSG_ERROR([The required function 'tputs' was not found in any library.
4280 The following libraries were tried (in order):
4281 libtinfo, libncurses, libterminfo, libcurses, libtermcap
4282 Please try installing whichever of these libraries is most appropriate
4283 for your system, together with its header files.
4284 For example, a libncurses-dev(el) or similar package.])],
4285 [-l*], [LIBS_TERMCAP=$emacs_cv_tputs_lib],
4286 [*], [LIBS_TERMCAP=])
4288 ## Use termcap instead of terminfo?
4289 ## Only true for: freebsd < 40000, ms-w32, msdos, netbsd < 599002500.
4291 ## FIXME? In the cases below where we unconditionally set
4292 ## LIBS_TERMCAP="-lncurses", this overrides LIBS_TERMCAP = -ltinfo,
4293 ## if that was found above to have tputs.
4294 ## Should we use the gnu* logic everywhere?
4296 ## darwin: Prevents crashes when running Emacs in Terminal.app under 10.2.
4297 ## The ncurses library has been moved out of the System framework in
4298 ## Mac OS X 10.2. So if configure detects it, set the command-line
4299 ## option to use it.
4300 darwin) LIBS_TERMCAP="-lncurses" ;;
4302 gnu*) test -z "$LIBS_TERMCAP" && LIBS_TERMCAP="-lncurses" ;;
4305 AC_MSG_CHECKING([whether FreeBSD is new enough to use terminfo])
4306 AC_CACHE_VAL(emacs_cv_freebsd_terminfo,
4307 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <osreldate.h>]],
4308 [[#if __FreeBSD_version < 400000
4311 ]])], emacs_cv_freebsd_terminfo=yes, emacs_cv_freebsd_terminfo=no)])
4313 AC_MSG_RESULT($emacs_cv_freebsd_terminfo)
4315 if test $emacs_cv_freebsd_terminfo = yes; then
4316 LIBS_TERMCAP="-lncurses"
4319 LIBS_TERMCAP="-ltermcap"
4329 if test "x$LIBS_TERMCAP" != "x-lterminfo"; then
4331 LIBS_TERMCAP="-ltermcap"
4335 openbsd | dragonfly) LIBS_TERMCAP="-lncurses" ;;
4337 ## hpux: Make sure we get select from libc rather than from libcurses
4338 ## because libcurses on HPUX 10.10 has a broken version of select.
4339 ## We used to use -lc -lcurses, but this may be cleaner.
4340 ## FIXME? But TERMINFO = yes on hpux (it used to be explicitly
4341 # set that way, now it uses the default). Isn't this a contradiction?
4342 hpux*) LIBS_TERMCAP="-ltermcap" ;;
4346 TERMCAP_OBJ=tparam.o
4347 if test $TERMINFO = yes; then
4348 AC_DEFINE(TERMINFO, 1, [Define to 1 if you use terminfo instead of termcap.])
4349 TERMCAP_OBJ=terminfo.o
4351 if test "X$LIBS_TERMCAP" = "X-lncurses"; then
4352 AC_DEFINE(USE_NCURSES, 1, [Define to 1 if you use ncurses.])
4354 AC_SUBST(LIBS_TERMCAP)
4355 AC_SUBST(TERMCAP_OBJ)
4357 # GNU/Linux-specific timer functions.
4358 AC_CACHE_CHECK([for timerfd interface], [emacs_cv_have_timerfd],
4360 [AC_LANG_PROGRAM([[#include <sys/timerfd.h>
4362 [[timerfd_create (CLOCK_REALTIME,
4363 TFD_CLOEXEC | TFD_NONBLOCK);
4364 timerfd_settime (0, TFD_TIMER_ABSTIME, 0, 0);]])],
4365 [emacs_cv_have_timerfd=yes],
4366 [emacs_cv_have_timerfd=no])])
4367 if test "$emacs_cv_have_timerfd" = yes; then
4368 AC_DEFINE([HAVE_TIMERFD], 1,
4369 [Define to 1 if timerfd functions are supported as in GNU/Linux.])
4372 # Alternate stack for signal handlers.
4373 AC_CACHE_CHECK([whether signals can be handled on alternate stack],
4374 [emacs_cv_alternate_stack],
4376 [AC_LANG_PROGRAM([[#include <signal.h>
4379 struct sigaction sa;
4380 ss.ss_sp = malloc (SIGSTKSZ);
4381 ss.ss_size = SIGSTKSZ;
4382 sa.sa_flags = SA_SIGINFO | SA_ONSTACK;
4383 sigaltstack (&ss, 0);
4384 sigaction (SIGSEGV, &sa, 0);]])],
4385 [emacs_cv_alternate_stack=yes],
4386 [emacs_cv_alternate_stack=no])])
4388 # Do we need the Hesiod library to provide the support routines?
4389 dnl FIXME? Should we be skipping this on Darwin too?
4392 if test "$with_hesiod" != no ; then
4393 # Don't set $LIBS here -- see comments above. FIXME which comments?
4395 AC_CHECK_FUNC(res_send, , [AC_CHECK_FUNC(__res_send, ,
4396 [AC_CHECK_LIB(resolv, res_send, resolv=yes,
4397 [AC_CHECK_LIB(resolv, __res_send, resolv=yes)])])])
4398 if test "$resolv" = yes ; then
4404 AC_CHECK_FUNC(hes_getmailhost, , [AC_CHECK_LIB(hesiod, hes_getmailhost,
4405 hesiod=yes, :, $RESOLVLIB)])
4407 if test x"$hesiod" = xyes; then
4409 LIBRESOLV=$RESOLVLIB
4415 # These tell us which Kerberos-related libraries to use.
4422 if test "${with_kerberos}" != no; then
4424 AC_CHECK_LIB(com_err, com_err, have_com_err=yes, have_com_err=no)
4425 if test $have_com_err = yes; then
4426 COM_ERRLIB=-lcom_err
4427 LIBS="$COM_ERRLIB $LIBS"
4429 AC_CHECK_LIB(crypto, mit_des_cbc_encrypt, have_crypto=yes, have_crypto=no)
4430 if test $have_crypto = yes; then
4432 LIBS="$CRYPTOLIB $LIBS"
4434 AC_CHECK_LIB(k5crypto, mit_des_cbc_encrypt, have_k5crypto=yes, have_k5crypto=no)
4435 if test $have_k5crypto = yes; then
4436 CRYPTOLIB=-lk5crypto
4437 LIBS="$CRYPTOLIB $LIBS"
4439 AC_CHECK_LIB(krb5, krb5_init_context, have_krb5=yes, have_krb5=no)
4440 if test $have_krb5=yes; then
4442 LIBS="$KRB5LIB $LIBS"
4444 dnl FIXME Simplify. Does not match 22 logic, thanks to default_off?
4445 if test "${with_kerberos5}" = no; then
4446 AC_CHECK_LIB(des425, des_cbc_encrypt, have_des425=yes, have_des425=no )
4447 if test $have_des425 = yes; then
4449 LIBS="$DESLIB $LIBS"
4451 AC_CHECK_LIB(des, des_cbc_encrypt, have_des=yes, have_des=no)
4452 if test $have_des = yes; then
4454 LIBS="$DESLIB $LIBS"
4457 AC_CHECK_LIB(krb4, krb_get_cred, have_krb4=yes, have_krb4=no)
4458 if test $have_krb4 = yes; then
4460 LIBS="$KRB4LIB $LIBS"
4462 AC_CHECK_LIB(krb, krb_get_cred, have_krb=yes, have_krb=no)
4463 if test $have_krb = yes; then
4465 LIBS="$KRB4LIB $LIBS"
4470 if test "${with_kerberos5}" != no; then
4471 AC_CHECK_HEADERS(krb5.h,
4472 [AC_CHECK_MEMBERS([krb5_error.text, krb5_error.e_text],,,
4473 [#include <krb5.h>])])
4475 AC_CHECK_HEADERS(krb.h,,
4476 [AC_CHECK_HEADERS(kerberosIV/krb.h,,
4477 [AC_CHECK_HEADERS(kerberos/krb.h)])])
4479 AC_CHECK_HEADERS(com_err.h)
4483 AC_SUBST(COM_ERRLIB)
4489 AC_ARG_WITH([libgmp],
4490 [AS_HELP_STRING([--without-libgmp],
4491 [don't use the GNU Multiple Precision (GMP) library;
4492 this is the default on systems lacking libgmp.])])
4494 GMP_OBJ=mini-gmp-emacs.o
4496 case $with_libgmp in
4498 yes) HAVE_GMP=yes GMP_LIB=-lgmp;;
4499 *) AC_CHECK_HEADERS([gmp.h],
4501 AC_SEARCH_LIBS([__gmpz_roinit_n], [gmp])
4503 case $ac_cv_search___gmpz_roinit_n in
4504 'none needed') HAVE_GMP=yes;;
4505 -*) HAVE_GMP=yes GMP_LIB=$ac_cv_search___gmpz_roinit_n;;
4508 if test "$HAVE_GMP" = yes; then
4510 AC_DEFINE([HAVE_GMP], 1, [Define to 1 if you have recent-enough GMP.])
4515 AC_CHECK_HEADERS(valgrind/valgrind.h)
4517 AC_CHECK_MEMBERS([struct unipair.unicode], [], [], [[#include <linux/kd.h>]])
4519 AC_CHECK_FUNCS_ONCE([sbrk])
4523 AC_CHECK_FUNCS(snprintf)
4525 dnl Check for glib. This differs from other library checks in that
4526 dnl Emacs need not link to glib unless some other library is already
4527 dnl linking to glib. Although glib provides no facilities that Emacs
4528 dnl needs for its own purposes, when glib is present Emacs needs to
4529 dnl use primitives like g_main_context_query to avoid clashing with
4530 dnl glib at a low level.
4532 dnl Check this late, since it depends on $GTK_CFLAGS etc.
4534 AC_CACHE_CHECK([whether GLib is linked in], [emacs_cv_links_glib],
4535 [OLDCFLAGS="$CFLAGS"
4537 CFLAGS="$CFLAGS $GTK_CFLAGS $RSVG_CFLAGS $DBUS_CFLAGS $SETTINGS_CFLAGS"
4538 LIBS="$LIBS $GTK_LIBS $RSVG_LIBS $DBUS_LIBS $SETTINGS_LIBS"
4539 CFLAGS="$CFLAGS $NOTIFY_CFLAGS $CAIRO_CFLAGS"
4540 LIBS="$LIBS $NOTIFY_LIBS $CAIRO_LIBS"
4541 AC_LINK_IFELSE([AC_LANG_PROGRAM(
4544 [[g_print ("Hello world");]])],
4545 [emacs_cv_links_glib=yes],
4546 [emacs_cv_links_glib=no])
4549 if test "${emacs_cv_links_glib}" = "yes"; then
4550 AC_DEFINE(HAVE_GLIB, 1, [Define to 1 if GLib is linked in.])
4551 if test "$HAVE_NS" = no;then
4557 dnl Adapted from Haible's version.
4558 AC_CACHE_CHECK([for nl_langinfo and CODESET], [emacs_cv_langinfo_codeset],
4559 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <langinfo.h>]],
4560 [[char *cs = nl_langinfo(CODESET);]])],
4561 [emacs_cv_langinfo_codeset=yes],
4562 [emacs_cv_langinfo_codeset=no])
4564 if test "$emacs_cv_langinfo_codeset" = yes; then
4565 AC_DEFINE([HAVE_LANGINFO_CODESET], 1,
4566 [Define if you have <langinfo.h> and nl_langinfo (CODESET).])
4568 AC_CACHE_CHECK([for nl_langinfo and _NL_PAPER_WIDTH],
4569 [emacs_cv_langinfo__nl_paper_width],
4570 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <langinfo.h>]],
4571 [[char *cs = nl_langinfo (_NL_PAPER_WIDTH);]])],
4572 [emacs_cv_langinfo__nl_paper_width=yes],
4573 [emacs_cv_langinfo__nl_paper_width=no])
4575 if test "$emacs_cv_langinfo__nl_paper_width" = yes; then
4576 AC_DEFINE([HAVE_LANGINFO__NL_PAPER_WIDTH], 1,
4577 [Define if you have <langinfo.h> and nl_langinfo (_NL_PAPER_WIDTH).])
4583 dnl Fixme: AC_SYS_POSIX_TERMIOS should probably be used, but it's not clear
4584 dnl how the tty code is related to POSIX and/or other versions of termios.
4585 dnl The following looks like a useful start.
4587 dnl AC_SYS_POSIX_TERMIOS
4588 dnl if test $ac_cv_sys_posix_termios = yes; then
4589 dnl AC_DEFINE(HAVE_TERMIOS, 1, [Define to 1 if you have POSIX-style functions
4590 dnl and macros for terminal control.])
4591 dnl AC_DEFINE(HAVE_TCATTR, 1, [Define to 1 if you have tcgetattr and tcsetattr.])
4594 dnl Turned on June 1996 supposing nobody will mind it.
4595 dnl MinGW emulates passwd database, so this feature doesn't make sense there.
4596 if test "${opsys}" != "mingw32"; then
4597 AC_DEFINE(AMPERSAND_FULL_NAME, 1, [Define to use the convention that &
4598 in the full name stands for the login id.])
4601 dnl Everybody supports this, except MS.
4602 dnl Seems like the kind of thing we should be testing for, though.
4603 ## Note: PTYs are broken on darwin <6. Use at your own risk.
4604 if test "${opsys}" != "mingw32"; then
4605 AC_DEFINE(HAVE_PTYS, 1, [Define if the system supports pty devices.])
4608 dnl Everybody supports this, except MS-DOS.
4609 dnl Seems like the kind of thing we should be testing for, though.
4610 AC_DEFINE(HAVE_SOCKETS, 1, [Define if the system supports
4611 4.2-compatible sockets.])
4613 AH_TEMPLATE(INTERNAL_TERMINAL, [This is substituted when $TERM is "internal".])
4615 AH_TEMPLATE(NULL_DEVICE, [Name of the file to open to get
4616 a null file, or a data sink.])
4617 if test "${opsys}" = "mingw32"; then
4618 AC_DEFINE(NULL_DEVICE, ["NUL:"])
4620 AC_DEFINE(NULL_DEVICE, ["/dev/null"])
4623 if test "${opsys}" = "mingw32"; then
4628 AC_DEFINE_UNQUOTED(SEPCHAR, ['$SEPCHAR'], [Character that separates PATH elements.])
4629 dnl This is for MinGW, and is used in test/Makefile.in.
4630 dnl The MSYS Bash has heuristics for replacing ':' with ';' when it
4631 dnl decides that a command-line argument to be passed to a MinGW program
4632 dnl is a PATH-style list of directories. But that heuristics plays it
4633 dnl safe, and only does the replacement when it is _absolutely_ sure it
4634 dnl sees a colon-separated list of file names; e.g. ":." is left alone,
4635 dnl which breaks in-tree builds. So we do this manually instead.
4636 dnl Note that we cannot rely on PATH_SEPARATOR, as that one will always
4637 dnl be computed as ':' in MSYS Bash.
4640 dnl Everybody supports this, except MS-DOS.
4641 AC_DEFINE(subprocesses, 1, [Define to enable asynchronous subprocesses.])
4643 AC_DEFINE(USER_FULL_NAME, [pw->pw_gecos], [How to get a user's full name.])
4646 AC_DEFINE(DIRECTORY_SEP, ['/'],
4647 [Character that separates directories in a file name.])
4649 if test "${opsys}" = "mingw32"; then
4650 AC_DEFINE(IS_DEVICE_SEP(_c_), [((_c_) == ':')],
4651 [Returns true if character is a device separator.])
4653 AC_DEFINE(IS_DIRECTORY_SEP(_c_), [((_c_) == '/' || (_c_) == '\\')],
4654 [Returns true if character is a directory separator.])
4656 AC_DEFINE(IS_ANY_SEP(_c_), [(IS_DIRECTORY_SEP (_c_) || IS_DEVICE_SEP(_c_))],
4657 [Returns true if character is any form of separator.])
4659 AC_DEFINE(IS_DEVICE_SEP(_c_), 0,
4660 [Returns true if character is a device separator.])
4662 AC_DEFINE(IS_DIRECTORY_SEP(_c_), [((_c_) == DIRECTORY_SEP)],
4663 [Returns true if character is a directory separator.])
4665 AC_DEFINE(IS_ANY_SEP(_c_), [(IS_DIRECTORY_SEP (_c_))],
4666 [Returns true if character is any form of separator.])
4669 if test "$USE_X_TOOLKIT" != "none"; then
4673 dnl Assar Westerlund <assar@sics.se> says this is necessary
4674 dnl for HP-UX 10.20, and that it works for HP-UX 0 as well.
4678 if test "$have_editres" != no && test ! -z "$LIBXMU"; then
4680 dnl See libXmu.a check above.
4681 if test x$HAVE_X11XTR6 = xyes; then
4682 LIBS="-lXt -lSM -lICE $LIBXMU"
4684 OTHERLIBS="-lXt -$LIBXMU"
4687 [#include <X11/Intrinsic.h>
4688 #include <X11/Xmu/Editres.h>],
4689 [_XEditResCheckMessages (0, 0, 0, 0);],
4690 [AC_DEFINE([X_TOOLKIT_EDITRES], 1,
4691 [Define to 1 if we should use XEditRes.])])
4698 dnl Some SVr4s don't define NSIG in sys/signal.h for ANSI environments;
4699 dnl instead, there's a system variable _sys_nsig. Unfortunately, we
4700 dnl need the constant to dimension an array. So wire in the appropriate
4702 AC_DEFINE(NSIG_MINIMUM, 32, [Minimum value of NSIG.])
4706 emacs_broken_SIGIO=no
4709 dnl SIGIO exists, but the feature doesn't work in the way Emacs needs.
4710 hpux* | nacl | openbsd | sol2* | unixware )
4711 emacs_broken_SIGIO=yes
4715 dnl On AIX Emacs uses the gmalloc.c malloc implementation. But given
4716 dnl the way this system works, libc functions that return malloced
4717 dnl memory use the libc malloc implementation. Calling xfree or
4718 dnl xrealloc on the results of such functions results in a crash.
4720 dnl One solution for this could be to define SYSTEM_MALLOC in configure,
4721 dnl but that does not currently work on this system.
4723 dnl It is possible to completely override the malloc implementation on
4724 dnl AIX, but that involves putting the malloc functions in a shared
4725 dnl library and setting the MALLOCTYPE environment variable to point to
4726 dnl that shared library.
4728 dnl Emacs currently calls xrealloc on the results of get_current_dir name,
4729 dnl to avoid a crash just use the Emacs implementation for that function.
4731 dnl FIXME We could change the AC_CHECK_FUNCS call near the start
4732 dnl of this file, so that we do not check for get_current_dir_name
4733 dnl on AIX. But that might be fragile if something else ends
4734 dnl up testing for get_current_dir_name as a dependency.
4735 AC_DEFINE(BROKEN_GET_CURRENT_DIR_NAME, 1, [Define if
4736 get_current_dir_name should not be used.])
4740 dnl Circumvent a bug in FreeBSD. In the following sequence of
4741 dnl writes/reads on a PTY, read(2) returns bogus data:
4743 dnl write(2) 1022 bytes
4744 dnl write(2) 954 bytes, get EAGAIN
4745 dnl read(2) 1024 bytes in process_read_output
4746 dnl read(2) 11 bytes in process_read_output
4748 dnl That is, read(2) returns more bytes than have ever been written
4749 dnl successfully. The 1033 bytes read are the 1022 bytes written
4750 dnl successfully after processing (for example with CRs added if the
4751 dnl terminal is set up that way which it is here). The same bytes will
4752 dnl be seen again in a later read(2), without the CRs.
4753 AC_DEFINE(BROKEN_PTY_READ_AFTER_EAGAIN, 1, [Define on FreeBSD to
4754 work around an issue when reading from a PTY.])
4760 dnl FIXME Can't we test if this exists (eg /proc/$$)?
4761 AC_DEFINE(HAVE_PROCFS, 1, [Define if you have the /proc filesystem.])
4766 darwin | dragonfly | freebsd | netbsd | openbsd )
4767 AC_DEFINE(DONT_REOPEN_PTY, 1, [Define if process.c does not need to
4768 close a pty to make it a controlling terminal (it is already a
4769 controlling terminal of the subprocess, because we did ioctl TIOCSCTTY).])
4773 dnl FIXME Surely we can test for this rather than hard-code it.
4775 netbsd | openbsd) sound_device="/dev/audio" ;;
4776 *) sound_device="/dev/dsp" ;;
4780 AC_DEFINE_UNQUOTED(DEFAULT_SOUND_DEVICE, "$sound_device",
4781 [Name of the default sound device.])
4784 dnl Emacs can read input using SIGIO and buffering characters itself,
4785 dnl or using CBREAK mode and making C-g cause SIGINT.
4786 dnl The choice is controlled by the variable interrupt_input.
4788 dnl Define INTERRUPT_INPUT to make interrupt_input = 1 the default (use SIGIO)
4790 dnl Emacs uses the presence of the USABLE_SIGIO macro
4791 dnl to indicate whether or not signal-driven I/O is possible. It uses
4792 dnl INTERRUPT_INPUT to decide whether to use it by default.
4794 dnl SIGIO can be used only on systems that implement it (4.2 and 4.3).
4795 dnl CBREAK mode has two disadvantages
4796 dnl 1) At least in 4.2, it is impossible to handle the Meta key properly.
4797 dnl I hear that in system V this problem does not exist.
4798 dnl 2) Control-G causes output to be discarded.
4799 dnl I do not know whether this can be fixed in system V.
4801 dnl Another method of doing input is planned but not implemented.
4802 dnl It would have Emacs fork off a separate process
4803 dnl to read the input and send it to the true Emacs process
4806 darwin | gnu-linux | gnu-kfreebsd )
4807 AC_DEFINE(INTERRUPT_INPUT, 1, [Define to read input using SIGIO.])
4812 dnl If the system's imake configuration file defines 'NeedWidePrototypes'
4813 dnl as 'NO', we must define NARROWPROTO manually. Such a define is
4814 dnl generated in the Makefile generated by 'xmkmf'. If we don't define
4815 dnl NARROWPROTO, we will see the wrong function prototypes for X functions
4816 dnl taking float or double parameters.
4818 cygwin|gnu|gnu-linux|gnu-kfreebsd|freebsd|netbsd|openbsd)
4819 AC_DEFINE(NARROWPROTO, 1, [Define if system's imake configuration
4820 file defines 'NeedWidePrototypes' as 'NO'.])
4825 dnl Used in process.c, this must be a loop, even if it only runs once.
4826 AH_TEMPLATE(PTY_ITERATION, [How to iterate over PTYs.])
4827 dnl Only used if !PTY_ITERATION. Iterate from FIRST_PTY_LETTER to z,
4828 dnl trying suffixes 0-16.
4829 AH_TEMPLATE(FIRST_PTY_LETTER, [Letter to use in finding device name of
4830 first PTY, if PTYs are supported.])
4831 AH_TEMPLATE(PTY_OPEN, [How to open a PTY, if non-standard.])
4832 AH_TEMPLATE(PTY_NAME_SPRINTF, [How to get the device name of the control
4833 end of a PTY, if non-standard.])
4834 AH_TEMPLATE(PTY_TTY_NAME_SPRINTF, [How to get device name of the tty
4835 end of a PTY, if non-standard.])
4839 AC_DEFINE(PTY_ITERATION, [int c; for (c = 0; !c ; c++)])
4840 dnl You allocate a pty by opening /dev/ptc to get the master side.
4841 dnl To get the name of the slave side, you just ttyname() the master side.
4842 AC_DEFINE(PTY_NAME_SPRINTF, [strcpy (pty_name, "/dev/ptc");])
4843 AC_DEFINE(PTY_TTY_NAME_SPRINTF, [strcpy (pty_name, ttyname (fd));])
4847 AC_DEFINE(PTY_ITERATION, [int i; for (i = 0; i < 1; i++)])
4848 dnl multi-line AC_DEFINEs are hard. :(
4849 AC_DEFINE(PTY_OPEN, [ do { int dummy; sigset_t blocked, procmask; sigemptyset (&blocked); sigaddset (&blocked, SIGCHLD); pthread_sigmask (SIG_BLOCK, &blocked, &procmask); if (-1 == openpty (&fd, &dummy, pty_name, 0, 0)) fd = -1; pthread_sigmask (SIG_SETMASK, &procmask, 0); if (fd >= 0) emacs_close (dummy); } while (false)])
4850 AC_DEFINE(PTY_NAME_SPRINTF, [])
4851 AC_DEFINE(PTY_TTY_NAME_SPRINTF, [])
4854 gnu | openbsd | qnxnto )
4855 AC_DEFINE(FIRST_PTY_LETTER, ['p'])
4858 gnu-linux | gnu-kfreebsd | dragonfly | freebsd | netbsd | darwin | nacl )
4860 if test "x$ac_cv_func_grantpt" = xyes; then
4861 AC_DEFINE(UNIX98_PTYS, 1, [Define if the system has Unix98 PTYs.])
4862 AC_DEFINE(PTY_ITERATION, [int i; for (i = 0; i < 1; i++)])
4863 dnl Note that grantpt and unlockpt may fork. We must block SIGCHLD
4864 dnl to prevent sigchld_handler from intercepting the child's death.
4865 AC_DEFINE(PTY_TTY_NAME_SPRINTF, [{ char *ptyname = 0; sigset_t blocked; sigemptyset (&blocked); sigaddset (&blocked, SIGCHLD); pthread_sigmask (SIG_BLOCK, &blocked, 0); if (grantpt (fd) != -1 && unlockpt (fd) != -1) ptyname = ptsname(fd); pthread_sigmask (SIG_UNBLOCK, &blocked, 0); if (!ptyname) { emacs_close (fd); return -1; } snprintf (pty_name, PTY_NAME_SIZE, "%s", ptyname); }])
4866 dnl if HAVE_POSIX_OPENPT
4867 if test "x$ac_cv_func_posix_openpt" = xyes; then
4868 AC_DEFINE(PTY_OPEN, [do { fd = posix_openpt (O_RDWR | O_CLOEXEC | O_NOCTTY); if (fd < 0 && errno == EINVAL) fd = posix_openpt (O_RDWR | O_NOCTTY); } while (false)])
4869 AC_DEFINE(PTY_NAME_SPRINTF, [])
4871 elif test "x$ac_cv_func_getpt" = xyes; then
4872 AC_DEFINE(PTY_OPEN, [fd = getpt ()])
4873 AC_DEFINE(PTY_NAME_SPRINTF, [])
4875 AC_DEFINE(PTY_NAME_SPRINTF, [strcpy (pty_name, "/dev/ptmx");])
4878 AC_DEFINE(FIRST_PTY_LETTER, ['p'])
4883 AC_DEFINE(FIRST_PTY_LETTER, ['p'])
4884 AC_DEFINE(PTY_NAME_SPRINTF, [sprintf (pty_name, "/dev/ptym/pty%c%x", c, i);])
4885 AC_DEFINE(PTY_TTY_NAME_SPRINTF, [sprintf (pty_name, "/dev/pty/tty%c%x", c, i);])
4889 dnl On SysVr4, grantpt(3) forks a subprocess, so do not use
4890 dnl O_CLOEXEC when opening the pty, and keep the SIGCHLD handler
4891 dnl from intercepting that death. If any child but grantpt's should die
4892 dnl within, it should be caught after sigrelse(2).
4893 AC_DEFINE(PTY_OPEN, [fd = open (pty_name, O_RDWR | O_NONBLOCK)])
4894 AC_DEFINE(PTY_TTY_NAME_SPRINTF, [{ char *ptsname (int), *ptyname; int grantpt_result; sigset_t blocked; sigemptyset (&blocked); sigaddset (&blocked, SIGCHLD); pthread_sigmask (SIG_BLOCK, &blocked, 0); grantpt_result = grantpt (fd); pthread_sigmask (SIG_UNBLOCK, &blocked, 0); if (grantpt_result == -1 || unlockpt (fd) == -1 || !(ptyname = ptsname (fd))) { emacs_close (fd); return -1; } snprintf (pty_name, PTY_NAME_SIZE, "%s", ptyname); }])
4898 dnl Comments are as per sol2*.
4899 AC_DEFINE(PTY_OPEN, [fd = open (pty_name, O_RDWR | O_NONBLOCK)])
4900 AC_DEFINE(PTY_TTY_NAME_SPRINTF, [{ char *ptsname (int), *ptyname; int grantpt_result; sigset_t blocked; sigemptyset (&blocked); sigaddset (&blocked, SIGCHLD); pthread_sigmask (SIG_BLOCK, &blocked, 0); grantpt_result = grantpt (fd); pthread_sigmask (SIG_UNBLOCK, &blocked, 0); if (grantpt_result == -1) fatal("could not grant slave pty"); if (unlockpt(fd) == -1) fatal("could not unlock slave pty"); if (!(ptyname = ptsname(fd))) fatal ("could not enable slave pty"); snprintf (pty_name, PTY_NAME_SIZE, "%s", ptyname); }])
4907 dnl This change means that we don't loop through allocate_pty too
4908 dnl many times in the (rare) event of a failure.
4909 AC_DEFINE(FIRST_PTY_LETTER, ['z'])
4910 AC_DEFINE(PTY_NAME_SPRINTF, [strcpy (pty_name, "/dev/ptmx");])
4911 dnl Push various streams modules onto a PTY channel. Used in process.c.
4912 AC_DEFINE(SETUP_SLAVE_PTY, [if (ioctl (forkin, I_PUSH, "ptem") == -1) fatal ("ioctl I_PUSH ptem"); if (ioctl (forkin, I_PUSH, "ldterm") == -1) fatal ("ioctl I_PUSH ldterm"); if (ioctl (forkin, I_PUSH, "ttcompat") == -1) fatal ("ioctl I_PUSH ttcompat");], [How to set up a slave PTY, if needed.])
4917 AH_TEMPLATE(SIGNALS_VIA_CHARACTERS, [Make process_send_signal work by
4918 "typing" a signal character on the pty.])
4921 dnl Perry Smith <pedz@ddivt1.austin.ibm.com> says this is correct for AIX.
4922 aix4-2 | cygwin | gnu | dragonfly | freebsd | netbsd | openbsd | darwin )
4923 AC_DEFINE(SIGNALS_VIA_CHARACTERS, 1)
4926 dnl 21 Jun 06: Eric Hanchrow <offby1@blarg.net> says this works.
4927 dnl FIXME Does gnu-kfreebsd have linux/version.h? It seems unlikely...
4928 gnu-linux | gnu-kfreebsd )
4930 AC_CACHE_CHECK([for signals via characters], [emacs_cv_signals_via_chars],
4931 [AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4932 #include <linux/version.h>
4933 #if LINUX_VERSION_CODE < 0x20400
4934 # error "Linux version too old"
4936 ]], [[]])], emacs_cv_signals_via_chars=yes, emacs_cv_signals_via_chars=no)])
4938 test "$emacs_cv_signals_via_chars" = yes && AC_DEFINE(SIGNALS_VIA_CHARACTERS, 1)
4943 AH_TEMPLATE(TAB3, [Undocumented.])
4946 darwin) AC_DEFINE(TAB3, OXTABS) ;;
4948 gnu | dragonfly | freebsd | netbsd | openbsd )
4949 AC_DEFINE(TABDLY, OXTABS, [Undocumented.])
4950 AC_DEFINE(TAB3, OXTABS)
4953 gnu-linux | gnu-kfreebsd )
4954 AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4958 ]], [[]])], AC_DEFINE(GC_MARK_SECONDARY_STACK(),
4959 [do { extern void *__libc_ia64_register_backing_store_base; __builtin_ia64_flushrs (); mark_memory (__libc_ia64_register_backing_store_base, __builtin_ia64_bsp ());} while (false)],
4960 [Mark a secondary stack, like the register stack on the ia64.]), [])
4964 AC_DEFINE(RUN_TIME_REMAP, 1, [Define if emacs.c needs to call
4965 run_time_remap; for HPUX.])
4970 dnl This won't be used automatically yet. We also need to know, at least,
4971 dnl that the stack is continuous.
4972 AH_TEMPLATE(GC_SETJMP_WORKS, [Define if setjmp is known to save all
4973 registers relevant for conservative garbage collection in the jmp_buf.])
4977 dnl Not all the architectures are tested, but there are Debian packages
4978 dnl for SCM and/or Guile on them, so the technique must work. See also
4979 dnl comments in alloc.c concerning setjmp and gcc.
4980 dnl Fixme: it's probably safe to just use the GCC conditional below.
4981 gnu-linux | gnu-kfreebsd )
4982 AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4983 #if defined __i386__ || defined __sparc__ || defined __mc68000__ \
4984 || defined __alpha__ || defined __mips__ || defined __s390__ \
4985 || defined __arm__ || defined __powerpc__ || defined __amd64__ \
4986 || defined __ia64__ || defined __sh__
4989 # error "setjmp not known to work on this arch"
4991 ]], [[]])], AC_DEFINE(GC_SETJMP_WORKS, 1))
4996 if test x$GCC = xyes; then
4997 dnl GC_SETJMP_WORKS is nearly always appropriate for GCC.
4998 AC_DEFINE(GC_SETJMP_WORKS, 1)
5001 aix* | dragonfly | freebsd | netbsd | openbsd | sol2* )
5002 AC_DEFINE(GC_SETJMP_WORKS, 1)
5007 dnl In a weird quirk, MS runtime uses _setjmp and longjmp.
5008 AC_CACHE_CHECK([for _setjmp], [emacs_cv_func__setjmp],
5011 [[#include <setjmp.h>
5013 # define _longjmp longjmp
5018 _longjmp (j, 1);]])],
5019 [emacs_cv_func__setjmp=yes],
5020 [emacs_cv_func__setjmp=no])])
5021 if test $emacs_cv_func__setjmp = yes; then
5022 AC_DEFINE([HAVE__SETJMP], 1, [Define to 1 if _setjmp and _longjmp work.])
5025 # We need to preserve signal mask to handle C stack overflows.
5026 AC_CACHE_CHECK([for sigsetjmp], [emacs_cv_func_sigsetjmp],
5029 [[#include <setjmp.h>
5032 if (! sigsetjmp (j, 1))
5033 siglongjmp (j, 1);]])],
5034 [emacs_cv_func_sigsetjmp=yes],
5035 [emacs_cv_func_sigsetjmp=no])])
5036 if test $emacs_cv_func_sigsetjmp = yes; then
5037 AC_DEFINE([HAVE_SIGSETJMP], 1,
5038 [Define to 1 if sigsetjmp and siglongjmp work.])
5041 case $emacs_cv_func_sigsetjmp,$emacs_cv_alternate_stack,$opsys in
5042 yes,yes,* | *,*,mingw32)
5043 AC_DEFINE([HAVE_STACK_OVERFLOW_HANDLING], 1,
5044 [Define to 1 if C stack overflow can be handled in some cases.]);;
5049 dnl TIOCGPGRP is broken in SysVr4, so we can't send signals to PTY
5050 dnl subprocesses the usual way. But TIOCSIGNAL does work for PTYs,
5051 dnl and this is all we need.
5052 AC_DEFINE(TIOCSIGSEND, TIOCSIGNAL, [Some platforms redefine this.])
5059 dnl Used in xfaces.c.
5060 AC_DEFINE(XOS_NEEDS_TIME_H, 1, [Compensate for a bug in Xos.h on
5061 some systems, where it requires time.h.])
5066 dnl Define symbols to identify the version of Unix this is.
5067 dnl Define all the symbols that apply correctly.
5068 AH_TEMPLATE(DOS_NT, [Define if the system is MS DOS or MS Windows.])
5069 AH_TEMPLATE(MSDOS, [Define if the system is MS DOS.])
5070 AH_TEMPLATE(USG, [Define if the system is compatible with System III.])
5071 AH_TEMPLATE(USG5_4, [Define if the system is compatible with System V Release 4.])
5076 dnl This symbol should be defined on AIX Version 3 ???????
5077 AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
5079 # error "_AIX not defined"
5081 ]], [[]])], [], AC_DEFINE(_AIX, [], [Define if the system is AIX.]))
5085 AC_DEFINE(CYGWIN, 1, [Define if the system is Cygwin.])
5089 dnl Not __APPLE__, as this may not be defined on non-macOS Darwin.
5090 dnl Not DARWIN, because Panther and lower CoreFoundation.h use DARWIN to
5091 dnl distinguish macOS from pure Darwin.
5092 AC_DEFINE(DARWIN_OS, [], [Define if the system is Darwin.])
5095 gnu-linux | gnu-kfreebsd )
5097 AC_DEFINE(GNU_LINUX, [], [Define if ths system is compatible with GNU/Linux.])
5102 AC_DEFINE(HPUX, [], [Define if the system is HPUX.])
5106 AC_DEFINE(DOS_NT, [])
5107 AC_DEFINE(WINDOWSNT, 1, [Define if compiling for native MS Windows.])
5108 if test "x$ac_enable_checking" != "x" ; then
5109 AC_DEFINE(EMACSDEBUG, 1, [Define to 1 to enable w32 debug facilities.])
5115 AC_DEFINE(USG5_4, [])
5116 AC_DEFINE(SOLARIS2, [], [Define if the system is Solaris.])
5121 AC_DEFINE(USG5_4, [])
5125 AC_CACHE_CHECK([for usable FIONREAD], [emacs_cv_usable_FIONREAD],
5128 dnl BUILD 9008 - FIONREAD problem still exists in X-Windows.
5129 emacs_cv_usable_FIONREAD=no
5133 emacs_cv_usable_FIONREAD=yes
5138 [AC_LANG_PROGRAM([[#include <sys/types.h>
5139 #include <sys/ioctl.h>
5141 # include <sys/filio.h>
5144 [[int foo = ioctl (0, FIONREAD, &foo);]])],
5145 [emacs_cv_usable_FIONREAD=yes],
5146 [emacs_cv_usable_FIONREAD=no])
5149 if test $emacs_cv_usable_FIONREAD = yes; then
5150 AC_DEFINE([USABLE_FIONREAD], [1], [Define to 1 if FIONREAD is usable.])
5152 if test $emacs_broken_SIGIO = no; then
5153 AC_CACHE_CHECK([for usable SIGIO], [emacs_cv_usable_SIGIO],
5155 [AC_LANG_PROGRAM([[#include <fcntl.h>
5158 [[int foo = SIGIO | F_SETFL | FASYNC;]])],
5159 [emacs_cv_usable_SIGIO=yes],
5160 [emacs_cv_usable_SIGIO=no])],
5161 [emacs_cv_usable_SIGIO=yes],
5162 [emacs_cv_usable_SIGIO=no])
5163 if test $emacs_cv_usable_SIGIO = yes; then
5164 AC_DEFINE([USABLE_SIGIO], [1], [Define to 1 if SIGIO is usable.])
5171 dnl It works to open the pty's tty in the parent (Emacs), then
5172 dnl close and reopen it in the child.
5173 AC_DEFINE(USG_SUBTTY_WORKS, 1, [Define for USG systems where it
5174 works to open a pty's tty in the parent process, then close and
5175 reopen it in the child.])
5179 AC_DEFINE(_STRUCTURED_PROC, 1, [Needed for system_process_attributes
5184 # Set up the CFLAGS for real compilation, so we can substitute it.
5185 CFLAGS="$REAL_CFLAGS"
5186 CPPFLAGS="$REAL_CPPFLAGS"
5189 ## Hack to detect a buggy GCC version.
5190 if test "$GCC" = yes && \
5191 $CC --version 2> /dev/null | grep 'gcc.* 4.5.0' >/dev/null; then
5193 *-fno-optimize-sibling-calls*) ;;
5195 AC_MSG_ERROR([GCC 4.5.0 has problems compiling Emacs; see etc/PROBLEMS.]);;
5199 version=$PACKAGE_VERSION
5201 copyright="Copyright (C) 2019 Free Software Foundation, Inc."
5202 AC_DEFINE_UNQUOTED(COPYRIGHT, ["$copyright"],
5203 [Short copyright string for this version of Emacs.])
5206 ### Specify what sort of things we'll be editing into Makefile and config.h.
5207 ### Use configuration here uncanonicalized to avoid exceeding size limits.
5209 AC_SUBST(configuration)
5214 AC_SUBST(exec_prefix)
5217 AC_SUBST(sharedstatedir)
5218 AC_SUBST(libexecdir)
5222 AC_SUBST(standardlisppath)
5223 AC_SUBST(locallisppath)
5225 AC_SUBST(x_default_search_path)
5227 AC_SUBST(archlibdir)
5233 ## FIXME? Nothing uses @LD_SWITCH_X_SITE@.
5234 ## src/Makefile.in did add LD_SWITCH_X_SITE (as a cpp define) to the
5235 ## end of LIBX_BASE, but nothing ever set it.
5236 AC_SUBST(LD_SWITCH_X_SITE)
5237 AC_SUBST(C_SWITCH_X_SITE)
5238 AC_SUBST(GNUSTEP_CFLAGS)
5240 ## Used in lwlib/Makefile.in.
5241 AC_SUBST(X_TOOLKIT_TYPE)
5243 AC_SUBST(ns_appbindir)
5244 AC_SUBST(ns_appresdir)
5246 AC_SUBST(GNU_OBJC_CFLAGS)
5247 AC_SUBST(OTHER_FILES)
5249 if test -n "${term_header}"; then
5250 AC_DEFINE_UNQUOTED(TERM_HEADER, "${term_header}",
5251 [Define to the header for the built-in window system.])
5254 AC_DEFINE_UNQUOTED(EMACS_CONFIGURATION, "${canonical}",
5255 [Define to the canonical Emacs configuration name.])
5256 AC_DEFINE_UNQUOTED(EMACS_CONFIG_OPTIONS, "${emacs_config_options}",
5257 [Define to the options passed to configure.])
5262 if test "${HAVE_X_WINDOWS}" = "yes" ; then
5263 AC_DEFINE(HAVE_X_WINDOWS, 1,
5264 [Define to 1 if you want to use the X window system.])
5266 XOBJ="xterm.o xfns.o xselect.o xrdb.o xsmfns.o xsettings.o"
5268 if test "$HAVE_CAIRO" = "yes"; then
5269 FONT_OBJ="$FONT_OBJ ftfont.o ftcrfont.o"
5270 elif test "$HAVE_XFT" = "yes"; then
5271 FONT_OBJ="$FONT_OBJ ftfont.o xftfont.o ftxfont.o"
5272 elif test "$HAVE_FREETYPE" = "yes"; then
5273 FONT_OBJ="$FONT_OBJ ftfont.o ftxfont.o"
5276 if test "${HAVE_HARFBUZZ}" = "yes" ; then
5277 FONT_OBJ="$FONT_OBJ hbfont.o"
5286 if test "${USE_X_TOOLKIT}" != "none" ; then
5288 AC_DEFINE(USE_X_TOOLKIT, 1, [Define to 1 if using an X toolkit.])
5289 if test "${USE_X_TOOLKIT}" = "LUCID"; then
5290 AC_DEFINE(USE_LUCID, 1, [Define to 1 if using the Lucid X toolkit.])
5291 elif test "${USE_X_TOOLKIT}" = "MOTIF"; then
5292 AC_DEFINE(USE_MOTIF, 1, [Define to 1 if using the Motif X toolkit.])
5296 ## Paul Abrahams <abrahams at equinox.shaysnet.com> says this is needed.
5297 MOTIF_LIBW="$MOTIF_LIBW -lXpm"
5301 ## Richard Anthony Ryan <ryanr at ellingtn.ftc.nrcs.usda.gov>
5302 ## says -lXimp is needed in UNIX_SV ... 4.2 1.1.2.
5303 MOTIF_LIBW="MOTIF_LIBW -lXimp"
5307 ## olson@mcs.anl.gov says -li18n is needed by -lXm.
5308 MOTIF_LIBW="$MOTIF_LIBW -li18n"
5311 MOTIF_LIBW="$MOTIF_LIBW $LIBXP"
5314 AC_SUBST(WIDGET_OBJ)
5317 case "$USE_X_TOOLKIT" in
5318 MOTIF) TOOLKIT_LIBW="$MOTIF_LIBW" ;;
5319 LUCID) TOOLKIT_LIBW="$LUCID_LIBW" ;;
5320 none) test "x$HAVE_GTK" = "xyes" && TOOLKIT_LIBW="$GTK_LIBS" ;;
5322 if test "$HAVE_XWIDGETS" = "yes"; then
5323 TOOLKIT_LIBW="$TOOLKIT_LIBW -lXcomposite"
5325 AC_SUBST(TOOLKIT_LIBW)
5327 if test "${opsys}" != "mingw32"; then
5328 if test "$USE_X_TOOLKIT" = "none"; then
5329 LIBXT_OTHER="\$(LIBXSM)"
5331 LIBXT_OTHER="\$(LIBXMU) -lXt \$(LIBXTR6) -lXext"
5334 AC_SUBST(LIBXT_OTHER)
5336 if test "${HAVE_X11}" = "yes" ; then
5337 AC_DEFINE(HAVE_X11, 1,
5338 [Define to 1 if you want to use version 11 of X windows.])
5339 LIBX_OTHER="\$(LIBXT) \$(LIBX_EXTRA)"
5343 AC_SUBST(LIBX_OTHER)
5346 if test "$HAVE_GTK" = yes || test "$HAVE_X11" != yes; then
5348 elif test "$USE_X_TOOLKIT" = none; then
5350 LIBXMENU='$(oldXMenudir)/libXMenu11.a'
5351 AUTODEPEND_PARENTS="$AUTODEPEND_PARENTS oldXMenu"
5353 LIBXMENU='$(lwlibdir)/liblw.a'
5354 AUTODEPEND_PARENTS="$AUTODEPEND_PARENTS lwlib"
5358 AC_CACHE_CHECK([for struct alignment],
5359 [emacs_cv_struct_alignment],
5361 [AC_LANG_PROGRAM([[#include <stddef.h>
5362 struct s { char c; } __attribute__ ((aligned (8)));
5363 struct t { char c; struct s s; };
5364 char verify[offsetof (struct t, s) == 8 ? 1 : -1];
5366 [emacs_cv_struct_alignment=yes],
5367 [emacs_cv_struct_alignment=no])])
5368 if test "$emacs_cv_struct_alignment" = yes; then
5369 AC_DEFINE([HAVE_STRUCT_ATTRIBUTE_ALIGNED], 1,
5370 [Define to 1 if 'struct __attribute__ ((aligned (N)))' aligns the
5371 structure to an N-byte boundary.])
5374 if test "${GNU_MALLOC}" = "yes" ; then
5375 AC_DEFINE(GNU_MALLOC, 1,
5376 [Define to 1 if you want to use the GNU memory allocator.])
5380 if test "${REL_ALLOC}" = "yes" ; then
5381 AC_DEFINE(REL_ALLOC, 1,
5382 [Define REL_ALLOC if you want to use the relocating allocator for
5385 test "$system_malloc" != "yes" && RALLOC_OBJ=ralloc.o
5387 AC_SUBST(RALLOC_OBJ)
5389 if test "$opsys" = "cygwin"; then
5390 CYGWIN_OBJ="cygw32.o"
5391 ## Cygwin differs because of its unexec().
5393 POST_ALLOC_OBJ=lastfile.o
5394 elif test "$opsys" = "mingw32"; then
5397 POST_ALLOC_OBJ=lastfile.o
5400 PRE_ALLOC_OBJ=lastfile.o
5403 AC_SUBST(CYGWIN_OBJ)
5404 AC_SUBST(PRE_ALLOC_OBJ)
5405 AC_SUBST(POST_ALLOC_OBJ)
5407 dnl Call this 'FORTIFY_SOUR' so that it sorts before the 'FORTIFY_SOURCE'
5408 dnl verbatim defined above. The tricky name is apropos, as this hack
5409 dnl makes Fortify go sour!
5410 AH_VERBATIM([FORTIFY_SOUR],
5411 [/* Without the following workaround, Emacs runs slowly on OS X 10.8.
5412 The workaround disables some useful run-time checking, so it
5413 should be conditional to the platforms with the performance bug.
5414 Perhaps Apple will fix this some day; also see m4/extern-inline.m4. */
5415 #if defined __APPLE__ && defined __GNUC__
5416 # ifndef _DONT_USE_CTYPE_INLINE_
5417 # define _DONT_USE_CTYPE_INLINE_
5419 # ifndef _FORTIFY_SOURCE
5420 # define _FORTIFY_SOURCE 0
5425 # If user asks to omit features, disable optional features that gnulib
5426 # might otherwise enable.
5427 if test "$with_features" = no && test "$enable_acl" != yes; then
5431 # Configure gnulib. Although this does not affect CFLAGS or LIBS permanently.
5432 # it temporarily reverts them to their pre-pkg-config values,
5433 # because gnulib needs to work with both src (which uses the
5434 # pkg-config stuff) and lib-src (which does not). For example, gnulib
5435 # may need to determine whether LIB_CLOCK_GETTIME should contain -lrt,
5436 # and it therefore needs to run in an environment where LIBS does not
5437 # already contain -lrt merely because 'pkg-config --libs' printed '-lrt'
5438 # for some package unrelated to lib-src.
5441 CFLAGS=$pre_PKG_CONFIG_CFLAGS
5442 LIBS="$LIB_PTHREAD $pre_PKG_CONFIG_LIBS"
5443 gl_ASSERT_NO_GNULIB_POSIXCHECK
5444 gl_ASSERT_NO_GNULIB_TESTS
5449 if test "${opsys}" = "mingw32"; then
5450 CPPFLAGS="$CPPFLAGS -DUSE_CRT_DLL=1 -I \${abs_top_srcdir}/nt/inc"
5451 # Remove unneeded switches from the value of CC that goes to Makefiles
5452 CC=`AS_ECHO(["$CC"]) | sed -e "s,$GCC_TEST_OPTIONS,,"`
5456 aix4-2) LD_SWITCH_SYSTEM_TEMACS="-Wl,-bnodelcsect" ;;
5458 cygwin) LD_SWITCH_SYSTEM_TEMACS="-Wl,-stack,0x00800000" ;;
5461 if test "$HAVE_NS" = "yes"; then
5462 libs_nsgui="-framework AppKit"
5463 if test "$NS_IMPL_COCOA" = "yes"; then
5464 libs_nsgui="$libs_nsgui -framework IOKit -framework Carbon"
5469 LD_SWITCH_SYSTEM_TEMACS=$libs_nsgui
5470 ## The -headerpad option tells ld (see man page) to leave room at the
5471 ## end of the header for adding load commands. Needed for dumping.
5472 ## 0x1000 is enough for roughly 52 load commands on the x86_64
5473 ## architecture (where they are 78 bytes each). The actual number of
5474 ## load commands added is not consistent but normally ranges from
5475 ## about 14 to about 34. Setting it high gets us plenty of slop and
5476 ## only costs about 1.5K of wasted binary space.
5477 headerpad_extra=1000
5478 if test "$with_unexec" = yes; then
5479 LD_SWITCH_SYSTEM_TEMACS="-fno-pie $LD_SWITCH_SYSTEM_TEMACS -Xlinker -headerpad -Xlinker $headerpad_extra"
5482 ## This is here because src/Makefile.in did some extra fiddling around
5483 ## with LD_SWITCH_SYSTEM. It seems cleaner to put this in
5484 ## LD_SWITCH_SYSTEM_TEMACS instead,
5485 test "x$LD_SWITCH_SYSTEM" = "x" && test "x$GCC" != "xyes" && \
5486 LD_SWITCH_SYSTEM_TEMACS="-X $LD_SWITCH_SYSTEM_TEMACS"
5489 ## LD_SWITCH_X_SITE_RPATH is a -rpath option saying where to
5490 ## find X at run-time.
5491 ## When handled by cpp, this was in LD_SWITCH_SYSTEM. However, at the
5492 ## point where configure sourced the s/*.h file, LD_SWITCH_X_SITE_RPATH
5493 ## had not yet been defined and was expanded to null. Hence LD_SWITCH_SYSTEM
5494 ## had different values in configure (in ac_link) and src/Makefile.in.
5495 ## It seems clearer therefore to put this piece in LD_SWITCH_SYSTEM_TEMACS.
5496 gnu*) LD_SWITCH_SYSTEM_TEMACS="\$(LD_SWITCH_X_SITE_RPATH)" ;;
5499 ## Is it any better under MinGW64 to relocate emacs into higher addresses?
5500 case "$canonical" in
5501 x86_64-*-*) LD_SWITCH_SYSTEM_TEMACS="-Wl,-stack,0x00800000 -Wl,-heap,0x00100000 -Wl,-image-base,0x400000000 -Wl,-entry,__start -Wl,-Map,./temacs.map" ;;
5502 *) LD_SWITCH_SYSTEM_TEMACS="-Wl,-stack,0x00800000 -Wl,-heap,0x00100000 -Wl,-image-base,0x01000000 -Wl,-entry,__start -Wl,-Map,./temacs.map" ;;
5506 *) LD_SWITCH_SYSTEM_TEMACS= ;;
5509 # -no-pie or -nopie fixes a temacs segfault on Gentoo, OpenBSD,
5510 # Ubuntu, and other systems with "hardened" GCC configurations for
5511 # some reason (Bug#18784). We don't know why this works, but not
5512 # segfaulting is better than segfaulting. Use ac_c_werror_flag=yes
5513 # when trying the option, otherwise clang keeps warning that it does
5514 # not understand it, and pre-4.6 GCC has a similar problem
5515 # (Bug#20338). Prefer -no-pie to -nopie, as -no-pie is the
5516 # spelling used by GCC 6.1.0 and later (Bug#24682).
5518 [for $CC option to disable position independent executables],
5519 [emacs_cv_prog_cc_no_pie],
5520 [if test $with_unexec = no; then
5521 emacs_cv_prog_cc_no_pie='not needed'
5523 emacs_save_c_werror_flag=$ac_c_werror_flag
5524 emacs_save_LDFLAGS=$LDFLAGS
5525 ac_c_werror_flag=yes
5526 for emacs_cv_prog_cc_no_pie in -no-pie -nopie no; do
5527 test $emacs_cv_prog_cc_no_pie = no && break
5528 LDFLAGS="$emacs_save_LDFLAGS $emacs_cv_prog_cc_no_pie"
5529 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [break])
5531 ac_c_werror_flag=$emacs_save_c_werror_flag
5532 LDFLAGS=$emacs_save_LDFLAGS
5534 case $emacs_cv_prog_cc_no_pie in
5536 LD_SWITCH_SYSTEM_TEMACS="$LD_SWITCH_SYSTEM_TEMACS $emacs_cv_prog_cc_no_pie"
5540 if test x$ac_enable_profiling != x ; then
5542 *freebsd | gnu-linux) ;;
5543 *) LD_SWITCH_SYSTEM_TEMACS="$LD_SWITCH_SYSTEM_TEMACS -pg" ;;
5547 LD_SWITCH_SYSTEM_TEMACS="$LDFLAGS_NOCOMBRELOC $LD_SWITCH_SYSTEM_TEMACS"
5549 AC_SUBST(LD_SWITCH_SYSTEM_TEMACS)
5551 ## Common for all window systems
5552 if test "$window_system" != "none"; then
5553 AC_DEFINE(HAVE_WINDOW_SYSTEM, 1, [Define if you have a window system.])
5554 AC_DEFINE(POLL_FOR_INPUT, 1, [Define if you poll periodically to detect C-g.])
5555 WINDOW_SYSTEM_OBJ="fontset.o fringe.o image.o"
5558 AC_SUBST(WINDOW_SYSTEM_OBJ)
5560 AH_TOP([/* GNU Emacs site configuration template file.
5562 Copyright (C) 1988, 1993-1994, 1999-2002, 2004-2019
5563 Free Software Foundation, Inc.
5565 This file is part of GNU Emacs.
5567 GNU Emacs is free software: you can redistribute it and/or modify
5568 it under the terms of the GNU General Public License as published by
5569 the Free Software Foundation, either version 3 of the License, or (at
5570 your option) any later version.
5572 GNU Emacs is distributed in the hope that it will be useful,
5573 but WITHOUT ANY WARRANTY; without even the implied warranty of
5574 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
5575 GNU General Public License for more details.
5577 You should have received a copy of the GNU General Public License
5578 along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>. */
5581 /* No code in Emacs #includes config.h twice, but some bits of code
5582 intended to work with other packages as well (like gmalloc.c)
5583 think they can include it as many times as they like. */
5584 #ifndef EMACS_CONFIG_H
5585 #define EMACS_CONFIG_H
5588 AH_BOTTOM([#include <conf_post.h>
5590 #endif /* EMACS_CONFIG_H */
5599 #### Report on what we decided to do.
5600 #### Report GTK as a toolkit, even if it doesn't use Xt.
5601 #### It makes printing result more understandable as using GTK sets
5602 #### toolkit_scroll_bars to yes by default.
5603 if test "${HAVE_GTK}" = "yes"; then
5604 USE_X_TOOLKIT="$USE_GTK_TOOLKIT"
5607 if test $USE_ACL -ne 0; then
5608 ACL_SUMMARY="yes $LIB_ACL"
5613 emacs_standard_dirs='Standard dirs'
5615 Configured for '${canonical}'.
5617 Where should the build process find the source code? ${srcdir}
5618 What compiler should emacs be built with? ${CC} ${CFLAGS}
5619 Should Emacs use the GNU version of malloc? ${GNU_MALLOC}${GNU_MALLOC_reason}
5620 Should Emacs use a relocating allocator for buffers? ${REL_ALLOC}
5621 Should Emacs use mmap(2) for buffer allocation? $use_mmap_for_buffers
5622 What window system should Emacs use? ${window_system}
5623 What toolkit should Emacs use? ${USE_X_TOOLKIT}
5624 Where do we find X Windows header files? ${x_includes:-$emacs_standard_dirs}
5625 Where do we find X Windows libraries? ${x_libraries:-$emacs_standard_dirs}"])
5628 emacs_config_features=
5629 for opt in XAW3D XPM JPEG TIFF GIF PNG RSVG CAIRO IMAGEMAGICK SOUND GPM DBUS \
5630 GCONF GSETTINGS GLIB NOTIFY ACL LIBSELINUX GNUTLS LIBXML2 FREETYPE HARFBUZZ M17N_FLT \
5631 LIBOTF XFT ZLIB TOOLKIT_SCROLL_BARS X_TOOLKIT OLDXMENU X11 XDBE XIM \
5632 NS MODULES THREADS XWIDGETS LIBSYSTEMD JSON PDUMPER UNEXEC LCMS2 GMP; do
5635 PDUMPER) val=${with_pdumper} ;;
5636 UNEXEC) val=${with_unexec} ;;
5637 GLIB) val=${emacs_cv_links_glib} ;;
5638 NOTIFY|ACL) eval val=\${${opt}_SUMMARY} ;;
5639 TOOLKIT_SCROLL_BARS|X_TOOLKIT) eval val=\${USE_$opt} ;;
5640 THREADS) val=${threads_enabled} ;;
5641 *) eval val=\${HAVE_$opt} ;;
5644 xno|xnone|x) continue ;;
5649 GTK*|LUCID|MOTIF) opt=$val ;;
5655 *lkqueue*) opt="$opt LIBKQUEUE" ;;
5656 *kqueue*) opt="$opt KQUEUE" ;;
5657 *inotify*) opt="$opt INOTIFY" ;;
5658 *gfile*) opt="$opt GFILENOTIFY" ;;
5659 *w32*) opt="$opt W32NOTIFY" ;;
5663 AS_VAR_APPEND([emacs_config_features], ["$optsep$opt"])
5666 AC_DEFINE_UNQUOTED(EMACS_CONFIG_FEATURES, "${emacs_config_features}",
5667 [Summary of some of the main features enabled by configure.])
5669 AS_ECHO([" Does Emacs use -lXaw3d? ${HAVE_XAW3D}
5670 Does Emacs use -lXpm? ${HAVE_XPM}
5671 Does Emacs use -ljpeg? ${HAVE_JPEG}
5672 Does Emacs use -ltiff? ${HAVE_TIFF}
5673 Does Emacs use a gif library? ${HAVE_GIF} $LIBGIF
5674 Does Emacs use a png library? ${HAVE_PNG} $LIBPNG
5675 Does Emacs use -lrsvg-2? ${HAVE_RSVG}
5676 Does Emacs use cairo? ${HAVE_CAIRO}
5677 Does Emacs use -llcms2? ${HAVE_LCMS2}
5678 Does Emacs use imagemagick? ${HAVE_IMAGEMAGICK}
5679 Does Emacs support sound? ${HAVE_SOUND}
5680 Does Emacs use -lgpm? ${HAVE_GPM}
5681 Does Emacs use -ldbus? ${HAVE_DBUS}
5682 Does Emacs use -lgconf? ${HAVE_GCONF}
5683 Does Emacs use GSettings? ${HAVE_GSETTINGS}
5684 Does Emacs use a file notification library? ${NOTIFY_SUMMARY}
5685 Does Emacs use access control lists? ${ACL_SUMMARY}
5686 Does Emacs use -lselinux? ${HAVE_LIBSELINUX}
5687 Does Emacs use -lgnutls? ${HAVE_GNUTLS}
5688 Does Emacs use -lxml2? ${HAVE_LIBXML2}
5689 Does Emacs use -lfreetype? ${HAVE_FREETYPE}
5690 Does Emacs use HarfBuzz? ${HAVE_HARFBUZZ}
5691 Does Emacs use -lm17n-flt? ${HAVE_M17N_FLT}
5692 Does Emacs use -lotf? ${HAVE_LIBOTF}
5693 Does Emacs use -lxft? ${HAVE_XFT}
5694 Does Emacs use -lsystemd? ${HAVE_LIBSYSTEMD}
5695 Does Emacs use -ljansson? ${HAVE_JSON}
5696 Does Emacs use -lgmp? ${HAVE_GMP}
5697 Does Emacs directly use zlib? ${HAVE_ZLIB}
5698 Does Emacs have dynamic modules support? ${HAVE_MODULES}
5699 Does Emacs use toolkit scroll bars? ${USE_TOOLKIT_SCROLL_BARS}
5700 Does Emacs support Xwidgets (requires gtk3)? ${HAVE_XWIDGETS}
5701 Does Emacs have threading support in lisp? ${threads_enabled}
5702 Does Emacs support the portable dumper? ${with_pdumper}
5703 Does Emacs support legacy unexec dumping? ${with_unexec}
5704 Which dumping strategy does Emacs use? ${with_dumping}
5707 if test -n "${EMACSDATA}"; then
5708 AS_ECHO([" Environment variable EMACSDATA set to: $EMACSDATA"])
5710 if test -n "${EMACSDOC}"; then
5711 AS_ECHO([" Environment variable EMACSDOC set to: $EMACSDOC"])
5716 if test "$HAVE_NS" = "yes"; then
5718 AS_ECHO(["Run '${MAKE-make}' to build Emacs, then run 'src/emacs' to test it.
5719 Run '${MAKE-make} install' in order to build an application bundle.
5720 The application will go to nextstep/Emacs.app and can be run or moved
5722 if test "$EN_NS_SELF_CONTAINED" = "yes"; then
5723 echo "The application will be fully self-contained."
5725 AS_ECHO(["The lisp resources for the application will be installed under ${prefix}.
5726 You may need to run \"${MAKE-make} install\" with sudo. The application will fail
5727 to run if these resources are not installed."])
5732 case $opsys,$emacs_uname_r in
5734 AC_MSG_WARN([[building Emacs on Cygwin 1.5 is not supported.]])
5737 cygwin,3.0.[[0-7]]'('*)
5738 AC_DEFINE([HAVE_CYGWIN_O_PATH_BUG], 1,
5739 [Define to 1 if opening a FIFO with O_PATH causes a hang.]);;
5742 # Remove any trailing slashes in these variables.
5744 */) prefix=`AS_DIRNAME(["$prefix."])`;;
5746 case $exec_prefix in
5747 */) exec_prefix=`AS_DIRNAME(["$exec_prefix."])`;;
5750 if test "$HAVE_NS" = "yes"; then
5751 if test "$NS_IMPL_GNUSTEP" = yes; then
5752 AC_CONFIG_FILES([nextstep/GNUstep/Emacs.base/Resources/Info-gnustep.plist:nextstep/templates/Info-gnustep.plist.in \
5753 nextstep/GNUstep/Emacs.base/Resources/Emacs.desktop:nextstep/templates/Emacs.desktop.in])
5754 ns_check_file=Resources/Info-gnustep.plist
5756 AC_CONFIG_FILES([nextstep/Cocoa/Emacs.base/Contents/Info.plist:nextstep/templates/Info.plist.in \
5757 nextstep/Cocoa/Emacs.base/Contents/Resources/English.lproj/InfoPlist.strings:nextstep/templates/InfoPlist.strings.in])
5758 ns_check_file=Contents/Info.plist
5760 AC_SUBST(ns_check_file)
5763 AC_CONFIG_FILES([Makefile lib/gnulib.mk])
5765 dnl config.status treats $srcdir specially, so I think this is ok...
5766 AC_CONFIG_FILES([$srcdir/doc/man/emacs.1])
5768 m4_define([subdir_makefiles],
5769 [lib/Makefile lib-src/Makefile oldXMenu/Makefile doc/emacs/Makefile doc/misc/Makefile doc/lispintro/Makefile doc/lispref/Makefile src/Makefile lwlib/Makefile lisp/Makefile leim/Makefile nextstep/Makefile nt/Makefile])
5770 SUBDIR_MAKEFILES="subdir_makefiles"
5771 AC_CONFIG_FILES(subdir_makefiles)
5773 dnl The test/ directory is missing if './make-dist --no-tests' was used.
5774 opt_makefile=test/Makefile
5775 if test -f "$srcdir/$opt_makefile.in"; then
5776 SUBDIR_MAKEFILES="$SUBDIR_MAKEFILES $opt_makefile"
5777 dnl Again, it's best not to use a variable. Though you can add
5778 dnl ", [], [opt_makefile='$opt_makefile']" and it should work.
5779 AC_CONFIG_FILES([test/Makefile])
5783 dnl The admin/ directory used to be excluded from tarfiles.
5784 if test -d $srcdir/admin; then
5785 SUBDIR_MAKEFILES="$SUBDIR_MAKEFILES admin/charsets/Makefile admin/unidata/Makefile admin/grammars/Makefile"
5786 AC_CONFIG_FILES([admin/charsets/Makefile])
5787 AC_CONFIG_FILES([admin/unidata/Makefile])
5788 AC_CONFIG_FILES([admin/grammars/Makefile])
5792 SUBDIR_MAKEFILES_IN=`echo " ${SUBDIR_MAKEFILES}" | sed -e 's| | $(srcdir)/|g' -e 's|Makefile|Makefile.in|g'`
5794 AC_SUBST(SUBDIR_MAKEFILES_IN)
5796 dnl You might wonder (I did) why epaths.h is generated by running make,
5797 dnl rather than just letting configure generate it from epaths.in.
5798 dnl One reason is that the various paths are not fully expanded (see above);
5799 dnl e.g., gamedir='${localstatedir}/games/emacs'.
5800 dnl Secondly, the GNU Coding standards require that one should be able
5801 dnl to run 'make prefix=/some/where/else' and override the values set
5802 dnl by configure. This also explains the 'move-if-change' test and
5803 dnl the use of force in the 'epaths-force' rule in Makefile.in.
5804 AC_CONFIG_COMMANDS([src/epaths.h], [
5805 if test "${opsys}" = "mingw32"; then
5806 ${MAKE-make} MAKEFILE_NAME=do-not-make-Makefile epaths-force-w32
5808 ${MAKE-make} MAKEFILE_NAME=do-not-make-Makefile epaths-force
5809 fi || AC_MSG_ERROR(['src/epaths.h' could not be made.])
5810 ], [GCC="$GCC" CPPFLAGS="$CPPFLAGS" opsys="$opsys"])
5812 dnl NB we have to cheat and use the ac_... version because abs_top_srcdir
5813 dnl is not yet set, sigh. Or we could use ../$srcdir/src/.gdbinit,
5815 AC_CONFIG_COMMANDS([src/.gdbinit], [
5816 if test ! -f src/.gdbinit && test -f "$srcdir/src/.gdbinit"; then
5817 AS_ECHO(["source $ac_abs_top_srcdir/src/.gdbinit"]) > src/.gdbinit
5821 dnl Perhaps this would be better named doc-emacs-emacsver.texi?
5822 dnl See comments for etc-refcards-emacsver.tex.
5823 dnl Since we get a doc/emacs directory generated anyway, for the Makefile,
5824 dnl it is not quite the same. But we are generating in $srcdir.
5825 AC_CONFIG_COMMANDS([doc/emacs/emacsver.texi], [
5826 ${MAKE-make} -s --no-print-directory -C doc/emacs doc-emacsver || \
5827 AC_MSG_ERROR(['doc/emacs/emacsver.texi' could not be made.])
5830 dnl If we give this the more natural name, etc/refcards/emacsver.texi,
5831 dnl then a directory etc/refcards is created in the build directory,
5832 dnl which is probably harmless, but confusing (in out-of-tree builds).
5833 dnl (If we were to generate etc/refcards/Makefile, this might change.)
5834 dnl It is really $srcdir/etc/refcards/emacsver.tex that we generate.
5835 AC_CONFIG_COMMANDS([etc-refcards-emacsver.tex], [
5836 ${MAKE-make} -s MAKEFILE_NAME=do-not-make-Makefile etc-emacsver || \
5837 AC_MSG_ERROR(['etc/refcards/emacsver.tex' could not be made.])
5840 if test $AUTO_DEPEND = yes; then
5841 for dir in $AUTODEPEND_PARENTS; do
5842 AS_MKDIR_P([$dir/deps])
5848 if test ! "$with_mailutils"; then
5849 if test "$with_pop" = yes; then
5850 AC_MSG_WARN([This configuration installs a 'movemail' program
5851 that retrieves POP3 email via only insecure channels.
5852 To omit insecure POP3, you can use '$0 --without-pop'.])
5853 elif test "$with_pop" = no-by-default; then
5854 AC_MSG_WARN([This configuration installs a 'movemail' program
5855 that does not retrieve POP3 email. By default, Emacs 25 and earlier
5856 installed a 'movemail' program that retrieved POP3 email via only
5857 insecure channels, a practice that is no longer recommended but that
5858 you can continue to support by using '$0 --with-pop'.])
5863 # Don't suggest GNU Mailutils, as it hasn't been ported.
5866 emacs_fix_movemail="use '$0 --with-mailutils'"
5867 case `(movemail --version) 2>/dev/null` in
5869 *) emacs_fix_movemail="install GNU Mailutils
5870 <https://mailutils.org> and $emacs_fix_movemail";;
5872 AC_MSG_NOTICE([You might want to $emacs_fix_movemail.]);;
5876 # Let plain 'make' work.
5877 test "$MAKE" = make || test -f makefile || cat >makefile <<EOF
5881 \$(MAKE) -f Makefile \$?
5883 \$(MAKE) -f Makefile \$<